JPH0551413U - Discharge device for foreign substances in pipes - Google Patents

Abstract

(57) [Summary] [Purpose] Efficiently discharge foreign substances in pipelines with a small amount of drainage. [Structure] A separation tank 3 having a larger flow passage cross-sectional area than the pipeline 1 and an appropriate depth is provided in the middle of the horizontal pipeline 1. A drain port 4 is provided at the bottom of the separation tank 3. The pipe 1 and both upper sides of the separation tank 3 are connected to each other by a pair of diffuser portions 5, 5 whose cross-sectional area gradually increases from the pipe 1 toward the separation tank 3. In the separation tank 3,
A mesh body 6 is arranged so as to cross between the openings of the diffuser portions 5 and 5. The foreign matter mixed in the fluid is separated and settled more favorably with a heavier material due to a decrease in the flow velocity of the fluid in the separation tank 3. The relatively light foreign matter is collected by the mesh body 6 and discharged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for discharging foreign matter in a pipe for efficiently discharging foreign matter such as sand and rust mixed in the pipeline.

[0002]

[Prior Art]

 Conventionally, when discharging foreign matter such as sand mixed in the pipeline, the valve 13a of the drainage port 13 provided in the fire hydrant mounting portion 12 of the pipeline 11 is periodically or not operated as shown in FIG. The wastewater is temporarily opened and drained, and foreign substances are discharged out of the pipeline along with this drainage. Alternatively, as shown in FIG. 5, a mud discharge pipe 14 extending from the upper end to the inner bottom of the pipe is provided at an appropriate position of the pipe 11, and a recess 15 is formed on the inner surface of the pipe at a portion corresponding to the open end of the mud discharge pipe 14. Is formed and the valve 16 provided on the upper portion of the mud discharge pipe 14 is opened to discharge the sand and the like accumulated in the recess together with the drainage.

[0003]

[Problems to be solved by the device]

 However, the discharge device using a fire hydrant shown in FIG. 4 has a problem in that the amount of foreign matter discharged is smaller than the amount of discharged water and the discharge efficiency is poor because it has no structure for collecting foreign matter. Further, since the drainage port 13 is provided at the top of the conduit 11, there is a problem that heavy foreign matter cannot be discharged.

Further, even if the mud discharge pipe 14 and the recessed portion 15 are provided as shown in FIG. 5, almost no foreign matter can be actually collected, and in this case as well, the foreign matter cannot be collected from the pipe line 11. Since the water is drained upward, there are the same problems as in the case of FIG.

Therefore, the present invention has an object to solve such a problem and to efficiently discharge a heavy foreign matter with a small amount of drainage and reliably discharge the heavy foreign matter.

[0006]

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention is provided in the middle of a horizontal pipe line and has a larger flow passage cross-sectional area than this pipe line and an appropriate depth. The vertical separation tank, the drainage port provided at the bottom of this separation tank, and the pipe and both sides of the upper part of the separation tank are connected together, and gradually separated from the pipe toward the separation tank. It is provided with a pair of diffuser parts having a large cross-sectional area, and a mesh-like body arranged so as to cross between the openings of the diffuser parts in the separation tank.

[0007]

[Action]

 According to such a configuration, the fluid flowing in the pipe gradually enters the separation tank after the flow speed gradually decreases in the diffuser, and the flow speed greatly decreases, so that the fluid flow in the separation tank is greatly disturbed. There is no. Therefore, the foreign matter mixed in the fluid and flowing in is separated and settled better as the heavier one becomes due to the decrease in the flow velocity in the separation tank. Even if the foreign matter does not wind up again due to the turbulence of the fluid flow, and the foreign matter is accurately separated and collects at the bottom of the separation tank, opening the drainage port at the bottom of the tank effectively removes the foreign matter with a small amount of drainage. Is discharged. Furthermore, since a mesh-like body is provided so as to cross between the openings of the diffuser section in the separation tank, relatively light foreign matter can flow out directly from one diffuser section to the other diffuser section together with the fluid. There is no such thing. Therefore, the foreign matter is surely collected and discharged, not only the heavy one but also the light one.

[0008]

【Example】

 As shown in FIG. 1, a device 2 for discharging foreign matter in a pipe according to the present invention is provided at an appropriate position in a horizontal pipe line 1. The foreign substance discharging device 2 for the foreign matter in the pipe is provided with a cylindrical separation tank 3 having a larger flow passage cross-sectional area than the pipe passage 1 and having an appropriate depth above and below, and a bottom portion of the separation tank 3. It has a discharge port 4 and its on-off valve 4a. Furthermore, a pair of diffuser parts 5 and 5 connecting the pipeline 1 and both sides of the upper part of the separation tank 3 respectively, and a central part between the openings of the diffuser parts 5 and 5 in the upper part of the separation tank 3 should be crossed. And the reticulated body 6 arranged in the. Reference numerals 7 and 7 denote joint pipes that connect the ends of the diffuser portions 5 and 5 to the pipe line 1.

The separation tank 3 has a diameter A of 3D or more, where D is the diameter of the conduit 1, and a depth B of 4D or more from the center of the conduit 1. The maximum diameter C of the diffuser parts 5 and 5 is set to about 1.5D to 2.0D. The mesh 6 is made of punching metal or the like having meshes of about 80 mesh.

In the above-described configuration, the fluid mixed with the foreign matter flowing in the conduit 1 is gradually reduced in the diffuser section 5 and then enters the separation tank 3 to be greatly reduced in flow rate. Therefore, the flow of the fluid is not significantly disturbed in the separation tank 3, and the relatively heavy foreign matter mixed in the fluid and flowing in the separation tank 3 is separated and settled due to the decrease in the flow velocity in the separation tank 3, and the flow of the fluid. It will not be wound up again due to the disorder.

In this way, the foreign matter is reliably separated and collected at the bottom of the separation tank 3, and by opening the valve 4a of the drainage port 4, it is efficiently discharged to the outside of the pipeline 1 with a small amount of drainage. Furthermore, since the mesh body 6 is provided in the separation tank 3, even if there is a relatively light foreign substance that flows out directly from the diffuser portion 5 on one side to the diffuser portion 5 on the other side together with the fluid, this mesh body is formed. It can be reliably collected at 6 and dropped to the bottom of the separation tank 3. In this way, any foreign matter can be more reliably collected and discharged.

In the above description, one plate-like net 6 which is perpendicular to the axial direction of the conduit 1 is provided as an example. As shown in FIG. 2, however, as shown in FIG. The reticulated body 8 may be provided. With such a configuration, the fluid flowing from one diffuser part 5 into the separation tank 3 smoothly changes its flow direction obliquely downward, and then changes its direction obliquely upward to the other diffuser part 5. leak. Therefore, the foreign matter collected by the mesh body 8 will be more surely settled to the bottom of the separation tank 3.

Alternatively, as shown in FIG. 3, a straight tube-shaped flow stabilizing portion 9 having an appropriate length may be provided between the diffuser portions 5 and 5 and the separation tank 3. With this structure, the flow of the fluid between the diffuser portions 5 and 5 and the separation tank 3 becomes more stable, and the performance of separating foreign matter is improved.

[0014]

[Effect of the device]

 As described above, according to the present invention, the flow rate of the fluid flowing in the pipeline gradually decreases after entering the separation tank after the flow rate gradually decreases in the diffuser section. The foreign matter that has flowed in the fluid does not significantly disturb, and the heavier ones are better separated and settled due to the decrease in the flow velocity in the separation tank, and the foreign matter is rewound due to the turbulence of the fluid flow. Therefore, foreign matter can be reliably separated and accumulated at the bottom of the separation tank.Because a mesh is provided in the separation tank, one diffuser part can be directed toward the other diffuser part. It is also possible to more reliably collect and separate relatively light foreign substances that flow out directly with the fluid. Therefore, by opening the drain port provided at the bottom of the separation tank, it is possible to achieve efficiency with a small amount of drainage. It is possible to discharge the foreign matter to.

[Brief description of drawings]

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

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

FIG. 3 is a sectional view showing a schematic configuration of a device for discharging foreign matter in a pipe 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 cross-sectional view of another conventional apparatus for discharging foreign matter in a pipe.

[Explanation of symbols]

 1 Pipe line 2 Discharge device for foreign matter in pipe 3 Separation tank 4 Discharge port 5 Diffuser section 6 Reticulate body

Claims (1)

[Scope of utility model registration request] 1. A vertical separation tank, which is provided in the middle of a horizontal pipe, has a flow passage cross-sectional area larger than that of the pipe, and has an appropriate depth, and a bottom of the separation tank. A pair of diffuser parts that connect the drain outlet provided, the pipe and both sides of the upper part of the separation tank, and whose cross-sectional area gradually increases from the pipe to the separation tank, and the diffuser part in the separation tank And a net-like member arranged so as to cross between the openings of the foreign substance in the pipe.