JPH06327783A - Device for removing dirt on fire hydrant and the like - Google Patents

Abstract

PURPOSE:To easily remove the dirt such as earth and sand accumulated in a pipeline to which the fire hydrant is to be connected. CONSTITUTION:The middle part of a U-shaped tube 6 is externally fit to the lower part of a short tube concentrically installed in a pipeline 1 such as water supply and drainage pipes and the water pipe for agricaltural use, etc. The lower part of the short tube and the middle part of the U-shaped tube 6 are connected through a connection port 9. A fire hydrant 7 is connected to one end opening part 6a of the U-shaped tube 6. A dirt removing tube 8 with an opening/closing valve 8a is connected to another end opening part 6b of the U-shaped tube 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge discharge device for discharging mud such as earth and sand accumulated at a connecting portion between a pipeline for water supply and sewerage, agricultural water supply, etc. and a water discharge pipe such as a fire hydrant connected to the pipeline. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, for example, when connecting a fire hydrant to a pipeline for water supply and sewerage, agricultural water supply, etc., as shown in FIG. 4, a short pipe 2 having a drain port 2a is concentrically arranged in the pipeline 1. The fire hydrant 3 is attached to the drain port 2a by interposing it, and water can be discharged from the fire hydrant 3 by opening the open / close valve 3a of the fire hydrant 3.

[0003]

SUMMARY OF THE INVENTION In the above conventional configuration,
Only water can be discharged from the pipeline 1 through the fire hydrant 3, and there is no function of removing mud such as earth and sand accumulated in the pipeline 1. Therefore, a strainer is installed in the pipeline 1 to remove mud such as earth and sand accumulated in the strainer or to remove mud such as earth and sand accumulated in front of the valve interposed in the pipeline 1. However, in this case, with the water supply by the pipeline 1 temporarily stopped, the strainer is disassembled to remove mud such as earth and sand accumulated therein, and the short pipe 2 is lifted using a chain block or the like. Therefore, it is necessary to disassemble the pipeline 1 to clean the valve, and there is a drawback that the sludge draining work takes a lot of time and effort.

In view of the above problems, it is an object of the present invention to provide a mud discharging device such as a fire hydrant capable of easily removing mud such as earth and sand accumulated in a pipeline to which a fire hydrant or the like is connected. I am trying.

[0005]

In order to achieve the above object, the present invention has a central portion of a U-shaped pipe at the lower part of a short pipe which is concentrically interposed in a pipeline for water supply and sewerage, agricultural water supply, etc. While being externally fitted, the lower part of the short pipe and the central part of the U-shaped pipe communicate with each other, and a water discharge pipe with an on-off valve such as a fire hydrant is connected to the one end opening of the U-shaped pipe, and the U-shaped It is characterized in that a sludge discharge pipe with an on-off valve is connected to the other end opening of the cylindrical pipe.

[0006]

According to the above construction, since mud such as earth and sand contained in the running water flowing through the pipeline collects in the central portion of the U-shaped tube which is lower than the bottom surface of the short tube interposed in the pipeline, it is drained. By opening the on-off valve of the mud pipe and draining it through the U-shaped pipe and the mud discharge pipe, the mud such as sediment accumulated in the central part of the U-shaped pipe is discharged outside the pipeline together with the drainage. You can

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, a short pipe 5 is concentrically interposed in a pipeline 1 for water and sewerage, agricultural water, etc., and a central portion of a U-shaped pipe 6 is externally fitted under the short pipe 5. A fire hydrant (water discharge pipe) 7 is connected to one end opening 6a of the U-shaped pipe 6, and a mud discharge pipe 8 with an on-off valve 8a is connected to the other end opening 6b of the U-shaped pipe 6.

A communication port 9 for communicating the U-shaped pipe 6 and the short pipe 5 with each other is formed from the central portion of the U-shaped pipe 6 to the one end opening 6a, and the flowing water flowing in the pipeline 1 is formed. The mud a such as earth and sand contained in is accumulated in the central portion of the U-shaped tube 6. Further, a partition wall 10 for partitioning the U-shaped pipe 6 and the short pipe 5 is formed from the central portion of the U-shaped pipe 6 to the other end opening 6b, and the opening / closing valve 8 of the sludge discharge pipe 8 is formed.
When the a is opened and the mud a such as earth and sand accumulated in the central portion of the U-shaped pipe 6 is discharged out of the pipeline 1 together with the drainage, the mud a such as earth and sand does not flow back into the short pipe 5. I am trying.

Further, among the on-off valves 7a and 8a, at least the on-off valve 8a on the side of the sludge discharge pipe 8 is formed by a full port valve such that the internal flow passage is completely opened when the ball valve or the like is fully opened. At this time, the opening / closing valve 8a is prevented from being clogged with mud a such as earth and sand.

In the above structure, when the fire fighting activity is carried out, the on-off valve 7a of the fire hydrant 7 need only be opened. As a result, from the pipeline 1 to the U-shaped pipe 6 and the fire hydrant 7
Water can be discharged via.

When performing the sludge discharge work, it is only necessary to open the open / close valve 8a of the sludge discharge pipe 8. By this, by draining from the pipeline 1 through the U-shaped pipe 6 and the mud discharge pipe 8, the mud a such as earth and sand accumulated in the central portion of the U-shaped pipe 6
Can be discharged out of the pipeline 1 together with the drainage.

When the water supply is stopped by closing the valve interposed in the pipeline 1, pressure water is pumped from the fire hydrant 7 side to the one end opening 6a of the U-shaped pipe 6 by a small pump. The mud a such as earth and sand accumulated in the central portion of the U-shaped pipe 6 can be discharged from the mud pipe 8 to the outside of the pipeline 1. In addition, U is connected via one on-off valve 7a or 8a.
It is also possible to insert a flexible pipe to the central portion of the U-shaped pipe 6 and suck the mud a such as earth and sand accumulated in the central portion of the U-shaped pipe 6 by a water absorption pump through the flexible pipe.

In the above embodiment, the fire hydrant 7 was attached to the one end opening 6a of the U-shaped pipe 6, but a pipe may be attached instead of the fire hydrant 7 to discharge water. Also,
Although both ends 6a and 6b of the U-shaped tube 6 are vertically oriented upwards, both ends 6a and 6b may be horizontally oriented horizontally.

[0014]

According to the present invention, the mud such as earth and sand accumulated in the pipeline is discharged to the outside of the pipeline together with the drain by simply opening the open / close valve of the mud discharge pipe and discharging the drain. Moreover, unlike the conventional case, it is not necessary to stop the water supply to the pipeline or disassemble the pipeline, and the sludge draining operation can be performed quickly and easily.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a mud discharge device such as a fire hydrant that is an embodiment of the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a view taken along the line BB of FIG.

FIG. 4 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

 1 Pipeline 5 Short pipe 6 U-shaped pipe 6a One end opening of U-shaped pipe 6b Other end opening of U-shaped pipe 7 Fire hydrant (water discharge pipe) 7a Open / close valve 8 Mud pipe 8a Open / close valve 9 Communication mouth

Claims (1)

[Claims] 1. A central portion of a U-shaped pipe is externally fitted to the lower portion of a short pipe that is concentrically interposed in a pipeline for water supply and sewerage, agricultural water supply, etc., and the lower portion of the short pipe is U-shaped. The central part of the pipe communicates with each other, a water discharge pipe with an on-off valve such as a fire hydrant is connected to one end opening of the U-shaped pipe, and a drainage mud pipe with an on-off valve is connected to the other end opening of the U-shaped pipe. A mud discharging device such as a fire hydrant that is connected.