JP2576036Y2 - 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.

[0003] Conventionally, as a foreign matter discharge pipe for discharging foreign matter in such a pipe, for example, a stand pipe is attached to a fire hydrant attached upward from a branch portion at the top of a T-shaped pipe constituting a pipe line. It has been proposed to mount and discharge water using the standpipe to discharge foreign matter out of the pipe. Further, there has been proposed a device in which a foreign substance is discharged by a mud spout pipe.

[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 addition, 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, but since this fire hydrant is installed upward using the branch part of the pipe top, Although relatively light foreign matter flowing in the vicinity thereof can be discharged, there is a problem that relatively heavy foreign matter flowing along the pipe bottom such as sand or rust is difficult to be discharged.

Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to use a relatively easy-to-use existing fire hydrant so that foreign substances flowing along the bottom of the pipe can be efficiently discharged out of the pipe. And

[0006]

According to the present invention, an opening is provided at or near a bottom of a main pipe constituting a horizontal pipe, and a branch pipe communicating with the opening is provided. The branch pipe is provided on the main pipe, and the branch pipe is formed integrally with the main pipe, and a spiral-shaped part is formed along the circumference of the main pipe from the bottom or near the pipe toward the top of the pipe, and a branch extending upward from the top of the pipe. And a portion configured to be capable of taking in foreign matter flowing along the bottom of the main pipe from the opening and discharging the foreign substance to the outside of the main pipe, and stabilizing the whole pipe at the bottom of the spiral part. Are formed.

[0007]

In such a case, the foreign matter normally flows through the bottom of the tube due to its relatively heavy weight, and accumulates on the bottom of the spiral part 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 spiral part is sent into the branch pipe through the spiral part and flows through the pipe due to the flow of the fluid in the pipe. Heavy foreign matter is also fed into the branch through the openings and spirals.
Therefore, these foreign substances are efficiently discharged out of the tube. In addition, since the pedestal is formed at the bottom of the spiral part, the whole pipe is stabilized, and the storage, transportation and laying of the pipe at a predetermined location are ensured.

[0008]

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 according to the present invention is provided 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 first embodiment of a foreign matter discharge pipe according to the present invention. Here, reference numeral 6 denotes a main pipe made of cast iron, which has a receiving port 7 at one end and an insertion port 8 at the other end, and is arranged in a horizontal direction to form a pipe. Reference numeral 9 denotes a branch pipe, which is formed integrally with the main pipe 6, and has a spiral part 10 formed from the bottom to the top along substantially half the circumference of the main pipe 1, and a top of the main pipe 1. And a branch portion 11 extending upward from the branch portion, and a flange 12 for attaching a fire hydrant is provided at a tip of the branch portion 11. An opening 13 communicating with the branch pipe 9 is formed at the bottom of the main pipe 6 where the branch pipe 9 is formed. In addition, an air vent hole 14 communicating with the branch pipe 9 is formed at the top of the main pipe 6 at that portion.
It is possible to discharge to the side.

A pedestal 17 is formed at the bottom of the spiral part 10. 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 is the outer peripheral surface of the flange 19 of the socket 7.
It is formed to coincide with the 20 positions.

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 bottom of the tube, passes through the opening 13 on the tube bottom side, and accumulates on the bottom of the spiral part 10.

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 spiral part 10 of the branch pipe 9 is removed by the water flow.
The foreign matter 16 sent to the branch portion 11 through the inside and flowing in the pipe also passes through the opening 13 and is sent into the branch pipe 9,
These foreign substances 16 pass through the fire hydrant 5 and are discharged outside the pipe.

Since the pedestal 17 is formed at the bottom of the spiral part 10, the seat of the tube 4 is stabilized, and a stable state can be ensured when the tube 4 is stored, transported and laid in a predetermined place. Come. As is clear from FIG. 2, the spiral part 10 has a larger radial dimension than the main pipe 6, so that the spiral part 10
By forming the pedestal 17 at the bottom of the tube 4, the seating of the tube 4 can be remarkably stabilized.

FIGS. 5 and 6 show a pipe for discharging foreign matter in a pipe according to a second embodiment of the present invention. In this embodiment, the spiral part
A large-capacity foreign matter reservoir 21 is formed at the bottom of the base 10, and a pedestal 17 is formed on the bottom wall of the foreign matter reservoir 21.
Is formed in a flat shape having a relatively large area.
With such a configuration, foreign matter flowing in the pipeline 1 is reliably deposited in the foreign matter storage portion 21, and more foreign matter can be deposited than in the first embodiment. The foreign substances can be efficiently discharged at the time of washing the tube, and the time interval before the washing can be increased. Further, since the pedestal 17 is provided as in the first embodiment, the seating of the pipe 4 can be stabilized.

FIGS. 7 and 8 show a third embodiment of the present invention. In this embodiment, the spiral part
The bottom of 10 is formed so as to extend in the horizontal tangential direction from the bottom of the main pipe 6 to form a pedestal 17. According to such a configuration, since the spiral part 10 does not protrude below the main pipe 6, it can be suitably used when there is no space below the main pipe 6.

[0016]

As described above, according to the present invention, the branch pipe formed integrally with the main pipe communicates with the opening at the bottom of the main pipe and extends to the top of the pipe along the periphery of the main pipe. And a branching portion extending upward from the top of the main pipe, so that foreign substances flowing along the bottom of the main pipe can be efficiently discharged to the outside of the pipe despite the fact that the existing fire hydrant can be attached without hindrance. In addition, since the pedestal is formed at the bottom of the spiral part, the whole pipe can be stabilized, and the stability of the pipe during storage, transportation, and laying in a predetermined place can be secured. .

[Brief description of the drawings]

FIG. 1 is a vertical sectional 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 plan view of a main part of the foreign matter discharging pipe of FIG. 1;

FIG. 4 is a view showing a laid state of the foreign matter discharge pipe.

FIG. 5 is a longitudinal sectional view of a foreign matter discharge pipe according to a second embodiment of the present invention.

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

FIG. 7 is a longitudinal sectional view of a foreign matter discharge pipe according to a third embodiment of the present invention.

FIG. 8 is a cross-sectional view of the foreign matter discharge tube of FIG. 7;

[Explanation of symbols]

 6 Main pipe 9 Branch pipe 10 Spiral part 11 Branch part 13 Opening 16 Foreign matter 17 Pedestal

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E03B 7/09 E03B 9/02

Claims (1)

(57) [Scope of request for utility model registration] An opening is provided at or near the bottom of a main pipe constituting a horizontal pipe, and a branch pipe communicating with the opening is provided in the main pipe, and the branch pipe is formed integrally with the main pipe. And a spiral portion formed from or near the pipe bottom toward the pipe top along the periphery of the main pipe, and a branching section extending upward from the pipe top, and extending along the pipe bottom of the main pipe. Foreign matter flowing out of the pipe through the opening and discharging the foreign matter out of the pipe, and a pedestal for stabilizing the whole pipe at the bottom of the spiral part is formed. Pipe.