JPH0441697Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a suction device for conduit passage, and is particularly suitable for use in wiring work for inserting cables performed in conjunction with conduit tests of cable storage pipes. The present invention relates to a suction device for conduit passage.

[Conventional technology]

Generally, in underground conduits through which transmission cables such as signal lines are passed, a passage test is performed after the conduit is laid and before the cables are inserted. After inspecting the conduit for any obstructions such as dents, cleaning is performed, and wiring work is performed for the subsequent cable insertion. In these processes, a mandrel having a diameter equivalent to that of the cable is passed through the conduit to inspect for passage obstructions, a cloth is passed through the conduit for cleaning, and a rope or the like is passed through the conduit for wiring work. In order to pass such mandrels, rags, ropes, etc. through conduits having a diameter of approximately 25 to 100 mm, a lacorder, commonly referred to as a mouse, has conventionally been used. This Lacorder has a double stacked structure of conical plates with a diameter corresponding to the inner diameter of the pipe, and is connected to a wire-carrying body such as a rope or mandrel and placed inside the pipe, and the compressor is inserted from the end of the pipe. The compressed air is used to travel inside the pipe, and the pipe is connected to the other end of the pipe.

By the way, in the above-mentioned pressure air wiring method, the racoder may jump out forcefully when the racoder reaches it, or the stopper to prevent it from popping out may pop out, which is extremely dangerous. Therefore, a suction-based wiring method was proposed, and the above method I try to avoid such dangers. In this method, a suction device is connected to the reach side of the racoder to create a negative pressure in the pipe line, and the racoder is run using this negative pressure to connect the wire. In addition, in order to avoid the risk of collision with the racoder, methods have been proposed in which a waste cloth made of sponge material is directly suctioned, or a parachute-shaped bag is used as a wire rod.

[The problem that the idea attempts to solve]

However, with the wiring method using negative pressure, the residual water inside the pipe is sucked together with the wiring material inside the pipe, which may have a negative effect on the suction blower, making it impossible to carry out the wiring work. It was hot.

Focusing on the above-mentioned conventional problems, the present invention can temporarily store the miscellaneous water sucked from inside the pipe during wiring work, allowing work to be carried out without stopping the suction for wiring. It is an object of the present invention to provide a suction device for conduit passage, which is capable of draining miscellaneous water separately.

[Means to solve the problem]

In order to achieve the above object, a suction device for pipe line according to the present invention is provided in a mounting device used for passing a wire threading material such as a rope from one end of a pipe to the other end. A vacuum container with a suction port connected to the end thereof, a suction blower attached to the vacuum container, and a vacuum container installed at the bottom of the vacuum container to drain miscellaneous water flowing in through the suction port through the drain port. The structure includes a drainage pump for discharging water through the drain.

[Effect]

According to the above configuration, the suction action is performed through the vacuum container, so if there is miscellaneous water in the pipe, the miscellaneous water is also sucked by the suction action to the wire rod and is once introduced into the vacuum container. be done. The vacuum suction action is performed as long as the suction port is not blocked by water, and the wire threading material is continuously transported within the pipe, so it does not affect the wire threading work. Then, when the wiring work is completed, the drainage pump inside the vacuum container is activated and the water accumulated inside is discharged from the drainage port. As a result, even if there is miscellaneous water in the pipe, it will not interfere with the wiring work, and
Drainage cleaning inside the pipe can also be performed at the same time.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the suction device for pipe passage according to the present invention will be described in detail with reference to the drawings.

A specific configuration of a suction device 10 for conduit passage according to an embodiment is shown in FIG. This pipe line suction device 1
0 is equipped with a cylindrical vacuum container 12, which can be opened and closed by attaching and detaching a lid 14 on the top surface. A suction blower 16 is installed on the top surface of the lid 14.
is integrally attached to the vacuum container 12 through an inlet 18 opened in the lid 14 to suck up air from inside the vacuum container 12 and exhaust it to the outside through an exhaust port 20 formed on the outer surface of the suction blower 16. . A filter cylinder 22 is attached to the inner surface of the lid 14 in correspondence with the introduction port 18, and is designed to separate impurities mixed in the suction air and discharge only the gaseous amount to the outside.

In addition, a suction port 24 connected to a pipe line (to be described later) is opened in the side wall of the vacuum container 12, and a short elbow pipe 26 is attached to this, and a mounting duct 28 is connected to the suction port 24.
In addition, the direction of suction introduction is directed toward the lower surface of the vacuum container 12 to prevent suctioned foreign matter from directly colliding with internal equipment. Therefore, by operating the suction blower 16, a negative pressure is created in the vacuum container 12, and this negative pressure causes air, miscellaneous water, and other impurities to be drawn into the suction port 24.
However, these are once sucked into the vacuum container 12.
It is collected at the bottom of the tank, and is separated into water and impurities and gas and suspended matter according to the difference in weight. Only the air is exhausted to the outside through the exhaust port 20 by the filter cylinder 22.

Further, a drainage pump 30 is installed inside the vacuum container 12, particularly at one corner of the bottom surface. This drainage pump 30 is equipped with a water filter 32 at its bottom to separate impurities from the water while sucking it up. A drain pipe 34 is provided on the upper surface of the drain pump 30, and this drain pipe 34 is bent and led out to the outside of the vacuum container 12 through a drain port 36 formed in the side wall of the vacuum container 12. For this reason, vacuum container 1
The water stored in 2 is sucked up by a drainage pump 30 and drained to the outside. A stop valve 37 is attached to the tip of the drain port 36, and is used to turn on and off the drain and to prevent air backflow.

In order to operate the suction blower 16 and drain pump 30 attached to the vacuum container 12, a start switch (not shown) is provided on the outer surface of the bottom wall of the vacuum container 12.
is provided. This activation can be done by causing the suction blower 16 to perform the wire running work, and after the wire running work is completed, by starting the drain pump 30 to perform drainage. The drainage pump 30 can also be activated automatically by separately providing a water level detector in the vacuum container 12.

The vacuum container 12 is provided with coaxial wheels 38A and casters 38B for easy movement.

Such a suction device 10 for threading a pipe is used for threading work to a pipe as shown in FIG. That is, it is used for passing the rope 44 through the conduit 42 that communicates between the manholes 40A and 40B. For this reason, a drum 46 on which a rope 44 as a wire passing material is wound is installed above ground on one manhole 40A side, and the rope 44 let out from this drum 46 is inserted into the pipe 42. ing. Here, a suction traveling body 48 is attached to the tip of the rope 44 in order to pull and move the rope 44. This suction traveling body 48 has a diameter corresponding to the inner diameter of the conduit 42 and is inserted almost tightly therein. On the other hand, on the manhole 40B side, a suction device 10 for conduit passage is installed to make the inside of the conduit 42 a negative pressure. This pipe line suction device 10 is installed above ground on the side of the manhole 40B, and guides a suction duct 28 connected to the suction port 24 into the manhole 40B, and a joint pipe 50 is attached to the tip of the suction duct 28.
By inserting the wire into the end of the conduit 42, preparation for wiring work is completed. After that, the suction blower 16
If you turn on the switch, wiring work will begin.

Suction device 10 for conduit passage according to such a configuration
Now, the suction traveling body 48 inserted into the pipe line 42 can be moved by negative pressure from the pipe end of one manhole 40A to the pipe end of the other manhole 40B, thereby allowing the rope 44 to pass through. Along with this wiring work, miscellaneous water in the pipe line 42 is also sucked into the vacuum container 12 at the same time, but this is not caused by the suction duct 2.
8 into the vacuum container 12 along with other impurities. At the suction port 24, the liquid falls through the short elbow tube 26 to the bottom of the vacuum container 12 and is thrown into the vacuum container 12. Air and water are discharged from the inside of the container through the filter tube 22 and the water filter 32, and impurities remain, so that the inside of the pipe can be cleaned at the same time as the pipe 42 is connected. Therefore, the suction blower 16 used for wiring work
Since gray water and the like are not directly sucked into the equipment, it is possible to continue work without causing damage to the equipment.

The suction device 10 for pipe line running in the above embodiment is applied to line running work, but it is also used for pipe airtightness tests after laying the pipe 42, drainage in manholes, and secondary shield work. During invert pouring in lining, it can also be used to temporarily clean the segment bottom plate upon completion of lining.

[Effect of idea]

As explained above, according to the present invention, in a suction device used when passing a wire passing material such as a rope from one end of a conduit, a vacuum is provided in which a drain port and a suction port connected to the end of the conduit are formed. A pipe line comprising a container, a suction blower attached to the vacuum container, and a drainage pump installed at the bottom of the vacuum container for discharging miscellaneous water that has flowed in through the suction port through the drain port. Since it is configured as a suction device for wiring, it is possible to temporarily store the miscellaneous water sucked from inside the pipeline during wiring work, and the work can be continued without stopping the suction for wiring. At the same time, the effect of draining gray water separately can be obtained.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a suction device for pipe line running according to an embodiment, and FIG. 2 is a configuration diagram of line running work equipment to which the same device is applied. 10... Suction device for conduit passage, 12... Vacuum container, 16... Suction blower, 24... Suction port, 30
... Drain pump, 36 ... Drain port, 42 ... Pipe line, 44 ... Rope (wire passage material), 48 ... Suction running body.

Claims (1)

[Scope of utility model registration request] A suction device used when passing a wire such as a rope from one end of a pipe to the other end includes a vacuum container in which a drain port and a suction port connected to the end of the pipe are formed, and a vacuum container attached to the vacuum container. A suction device for conduit passage, comprising: a suction blower; and a drain pump installed at the bottom of the vacuum container and discharging miscellaneous water that has flowed in through the suction port through the drain port.