JP2558934Y2 - Discharge device for foreign matter in pipe - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for efficiently discharging foreign matter such as sand and rust mixed in a pipe.

[0002]

2. Description of the Related Art Conventionally, when discharging foreign matter such as sand mixed in a pipeline, as shown in FIG. 4, a valve 13a of a drain port 13 provided in a fire hydrant mounting portion 12 of a pipeline 11 is operated. By opening the water regularly and temporarily, and draining water, foreign substances are discharged out of the pipeline together with the water. Alternatively, as shown in FIG. 5, a mud spout pipe 14 is provided at an appropriate position of the pipe line 11 and extends from the upper end thereof to the inner bottom of the pipe, and a concave portion 15 is formed in a pipe inner surface corresponding to the open end of the mud spout pipe 14. By opening the valve 16 provided on the upper part of the mud spouting pipe 14, sand and the like accumulated in the concave portion are discharged together with drainage.

[0003]

However, the discharge device using a fire hydrant shown in FIG. 4 does not have a structure capable of collecting foreign matter, so that the amount of foreign matter discharged is smaller than the amount of drainage, and the discharge efficiency is poor. There is a problem. Further, since the drain 13 is provided at the top of the conduit 11, there is also a problem that heavy foreign substances cannot be discharged.

Further, even if the mud discharging pipe 14 and the recess 15 are provided as shown in FIG. 5, almost no foreign matter can be actually collected. Therefore, there is a problem similar to that of FIG.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to efficiently discharge heavy foreign matter with a small amount of drainage and reliably discharge the foreign matter.

[0006]

In order to achieve the above-mentioned object, the present invention is provided in the middle of a horizontal pipe, has a larger cross-sectional area than the pipe, and has an appropriate depth. At the bottom, a vertical separation tank capable of sedimenting foreign matter in the pipeline, a drain port provided at the bottom of the separation tank, and both sides of the pipeline and the upper part of the separation tank are connected. Along with the pair of diffusers, the cross-sectional area of which gradually increases from the pipe line to the separation tank, and a pair of diffusers in the separation tank are arranged so as to cross between the openings of the diffusion tank. And a net-like body arranged so as to have a space between the bottom and the bottom.

[0007]

According to this structure, the flow rate of the fluid flowing in the pipe line gradually decreases in the diffuser portion, and then enters the separation tank. There is no disturbance. Therefore, the foreign substances mixed and flowing into the fluid are separated and settled more favorably as the weight increases as the flow velocity decreases in the separation tank. In addition, since the foreign matter is reliably separated and collected at the bottom of the separation tank without being re-wound by the disturbance of the flow of the fluid, the foreign matter is efficiently discharged with a small amount of drainage by opening the drain port at the bottom of the tank. Is done. In addition, since the mesh is provided so as to cross between the openings of the diffuser in the separation tank, relatively light foreign matter may flow directly from one diffuser to the other diffuser together with the fluid. There is no. Therefore, the foreign matter is reliably collected and discharged not only when it is heavy but also when it is light. Also, because it is configured to have a space between the mesh and the bottom of the separation tank,
Even if the mesh is completely clogged, the space ensures a fluid passage, and the function as a normal pipeline is maintained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a discharge device 2 for foreign matter in a pipe according to the present invention is provided at an appropriate place in a horizontal pipe 1. The discharge device 2 for foreign substances in a pipe has a cylindrical separation tank 3 having a flow path cross-sectional area larger than that of the pipe line 1 and having an appropriate depth up and down, and a discharge tank provided at the bottom of the separation tank 3. It has an outlet 4 and its on-off valve 4a. Further, a pair of diffusers 5 and 5 for connecting the pipe 1 to both upper sides of the separation tank 3, respectively, and so as to cross the center between the openings of the diffusers 5 and 5 in the upper part of the separation tank 3. And a reticulated body 6 arranged.
Reference numerals 7 and 7 denote joint pipes for connecting the distal ends of the respective diffuser portions 5 and 5 to the pipeline 1. As shown, a gap is provided between the lower end of the mesh body 6 and the bottom of the separation tank 3.

When the diameter of the pipe 1 is D, the separation tank 3 is 3D.
It has the above diameter A and has a depth B of 4D or more from the center of the pipeline 1. The maximum diameter C of the diffusers 5, 5 is set to about 1.5D to 2.0D. The mesh body 6 is made of a punching metal or the like having eyes of about 80 mesh.

In the above-described configuration, the fluid mixed with the foreign matter flowing in the pipe line 1 enters the separation tank 3 after the flow velocity gradually decreases in the diffuser section 5, and the flow velocity decreases greatly. For this reason, the flow of the fluid in the separation tank 3 is not greatly disturbed, and the relatively heavy foreign matter mixed into the fluid and flowing in the separation tank 3 separates and sinks due to a decrease in the flow velocity in the separation tank 3, and the flow of the fluid flows. There is no rewind by the turbulence.

In this way, the foreign matter is surely separated and the separation tank 3
And is discharged to the outside of the pipeline 1 with a small amount of drainage by opening the valve 4a of the drain port 4. Further, since the mesh member 6 is provided in the separation tank 3, even if there is a relatively light foreign substance which flows directly together with the fluid from one diffuser portion 5 toward the other diffuser portion 5, the mesh member 6 may be used. At the bottom of the separation tank 3. In this way,
Any foreign matter can be more reliably collected and discharged. Further, since a gap is provided between the lower end of the mesh body 6 and the bottom of the separation tank 3, even if the mesh body 6 is completely clogged, a fluid passage is secured by this gap, The function as a normal pipeline can be maintained.

In the above description, one plate-shaped net-like body 6 perpendicular to the axial direction of the pipe line 1 is provided, but as shown in FIG. May be provided. With such a configuration, the fluid flowing into the separation tank 3 from one diffuser unit 5 smoothly changes its flow direction diagonally downward, and then changes its direction diagonally upward to the other diffuser unit 5. leak. For this reason, the foreign matter collected by the mesh member 8 is more reliably settled at the bottom of the separation tank 3.

Alternatively, as shown in FIG. 3, a straight pipe-shaped flow stabilizing section 9 having an appropriate length may be provided between each diffuser section 5, 5 and the separation tank 3. With this configuration, the flow of the fluid between the diffusers 5 and 5 and the separation tank 3 becomes more stable, and the performance of separating foreign substances is enhanced.

[0014]

[Effects of the Invention] As described above, according to the present invention, the fluid flowing in the pipeline enters the separation tank after the flow velocity gradually decreases in the diffuser portion, and the flow velocity greatly decreases. The flow of fluid is not greatly disturbed by
Foreign matter that has flowed into the fluid by mixing it will be separated and settled better as the flow rate decreases in the separation tank as the weight increases, and it will not be rolled up again due to turbulence in the fluid flow. Can be collected at the bottom of the separation tank, and since a mesh is provided in the separation tank, relatively light foreign matter that flows directly with the fluid from one diffuser to the other diffuser can be removed. Can be collected and separated more reliably,
Therefore, by opening the drain port provided at the bottom of the separation tank, foreign matters can be efficiently discharged with a small amount of drain water. In addition, since there is a space between the mesh and the bottom of the separation tank, even if the mesh is completely clogged, a fluid passage is secured by the space, and a normal pipe line is formed. Function can be maintained.

[Brief description of the drawings]

FIG. 1 is a front view of an apparatus for discharging foreign matter in a pipe according to an embodiment of the present invention;

FIG. 2 is a sectional view showing a schematic configuration of an apparatus for discharging foreign matter in a pipe according to another embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating a schematic configuration of an apparatus for discharging foreign matter in a tube according to still another embodiment of the present invention.

FIG. 4 is a schematic front view of a conventional device for discharging foreign matter in a pipe.

FIG. 5 is a schematic sectional view of another conventional apparatus for discharging foreign matter in a pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipeline 2 Discharge device of foreign substance in pipe 3 Separation tank 4 Discharge port 5 Diffuser part 6 Net-like body

Claims (1)

(57) [Scope of request for utility model registration] 1. A pipe is provided in the middle of a horizontal pipe, has a flow path cross-sectional area larger than that of the pipe, has an appropriate depth, and sediments foreign matters in the pipe at the bottom thereof. This
A vertical separation tank that can be connected to the tank, a drain port provided at the bottom of the separation tank, and a pipe and both sides of the upper part of the separation tank are connected to each other, and gradually traverse from the pipe toward the separation tank. a pair of diffuser unit area increases, are arranged so as to cross between the openings to each other in the diffuser section in the separation tank Rutotomoni, between the bottom of the separation tank
An apparatus for discharging foreign matter in a pipe, comprising: a mesh body disposed so as to have an interval .