JP2000291126A - Drainage device in manhole - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable automatic operation of a submersible pump by means of a solar cell so that water retained in a manhole can be discharged at any time together with slurried earth and sand without any need for manual operation. SOLUTION: A solar cell panel 2 is provided on a support 1 such as a support.
On the other hand, a submersible pump p is installed in the manhole 5, and the solar cell and the submersible pump p are electrically connected via a water level detection switch 6 for detecting the level of the stagnant water flowing into the manhole 5, The drain pipe 12 of the submersible pump p is branched in two directions, one of the branch pipes 13 has an end portion 13a opened toward the bottom 5a of the manhole 5, and the other branch pipe 14 has a drain groove as an original drain pipe. 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submersible pump which can be automatically operated via a water level detection switch, and which allows drainage of water remaining in a manhole to be constantly drained together with slurried earth and sand. Related to the device.

[0002]

2. Description of the Related Art Recently, underground communication cables and the like have been buried underground for the purpose of improving landscape and traffic safety. For maintenance of buried cables, manholes must be installed every several tens of meters along the buried road, and this manhole is indispensable for underground burial facilities such as gas pipes and water pipes. It is. During rainfall, rainwater or the like flows into these manholes together with sediment and sediment, and sewage flows from nearby manholes. It must be discharged at any time with sediment deposited on the bottom of the manhole.

Conventionally, in order to treat accumulated water and the like generated in a manhole, a work vehicle is used to go to a site and drained by using a generator and a submersible pump mounted on the work vehicle. It was removed manually. However, on the road, there are prior work such as traffic regulation and equipment installation before draining work, and there is also post-work to return the site to the original state after the drainage work is completed. Labor and time were required.

The object of the present invention is to solve such a problem. An object of the present invention is to install a submersible pump whose operation is automatically controlled by a water level detection switch in a manhole, and the submersible pump is automatically controlled by power supply from a solar cell. While the operation is being performed, part of the accumulated water discharged by the submersible pump is injected toward the bottom of the manhole, and the sediment deposited on the bottom is stirred and mixed to form a slurry, and the slurry stays in the manhole together with the slurry. An object of the present invention is to provide a drainage device in a manhole that can discharge water at any time without requiring any manual operation.

[0005]

In order to achieve the above-mentioned object, a drainage device in a manhole, which is a feature of the present invention, has a solar cell panel mounted on a support such as a column while a submersible pump is provided in the manhole. Is installed, and the solar cell and the submersible pump are electrically connected via a water level detection switch that detects the level of the stagnant water flowing into the manhole. The drain pipe of the submersible pump is branched in two directions. The branch pipe is configured such that the tip end is opened toward the bottom of the manhole, and the other branch pipe communicates with the drain as an original drain pipe.

[0006] As an embodiment of the support, it is economically preferable to use an existing telephone pole if it is existing and can be used. In addition, a solar cell is provided with a charge / discharge controller as usual. A battery is connected, and a drive motor of the submersible pump is electrically connected to the battery via a water level detection switch. In addition, the drain pipe of the submersible pump may be communicated only with the drain groove side so that only the stagnant water is constantly drained.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a support such as a column, and a solar cell panel 2 is provided on the top side thereof.
Are attached together with the charge / discharge controller 3 and the electric storage device 4 which are the attached electric devices. On the other hand, the bottom 5 of the manhole 5
A submersible pump p is installed on the a. The submersible pump p is electrically connected to the solar cell side (the battery 4 connected to the panel 2) via a water level detection switch indicated by reference numeral 6. It is connected to the. Reference numeral 7 denotes a connection box for a cable, which will be described later, attached to the inside of the opening edge of the manhole 5 or the like.

The water level detection switch 6 is, for example, a micro switch (not shown) as shown in the wiring diagram of FIG.
Is suspended at a required height in the manhole 5 using a rope r or the like, and when the water level of the stagnant water reaches the detection body, the detection body is provided inside. The micro switch is turned on by tilting in a certain direction due to the relationship between the eccentric weight and buoyancy (illustrated by the imaginary line). ), A conventionally known structure in which the microswitch is turned off can be used.

When the water level detection switch 6 using such a detector is used, the power cable 8 extending from the storage battery 4 side of the solar cell and the microswitch of the detector have been drawn in the junction box 7 described above. The relay cord 9 and the power supply cord 11 pulled out from the drive motor (not shown) of the submersible pump p are electrically connected,
The detection body operates as described above due to the water retained in the manhole 5, and the operation of the submersible pump p is controlled by the on / off operation of a microswitch provided in the detection body.
As the water level detection switch 6, a structure that can be turned on and off following the water level of the water remaining in the manhole 5, such as a normal float type level switch, can also be used.

The drain pipe 12 of the submersible pump p is branched in two directions. One of the branch pipes 13 has an end 13a opening toward the bottom 5a of the manhole 5, and the other branch pipe 14 has Are respectively piped as original drain pipes so as to communicate with drain grooves 15 outside the manhole 5. Therefore, when the submersible pump p is driven, a part of the stagnant water discharged by the submersible pump is injected toward the bottom 5a of the manhole 5 through one branch pipe 13 to stir the sediment and the like deposited there. The slurry is mixed to form a slurry, and the slurry can be discharged to the drain groove 15 side through the other branch pipe 14 together with the water retained in the manhole 5.

[0011]

As described above, the present invention is not only economical in that it can be carried out easily and inexpensively by using a solar cell, but also enables drainage work to be completely labor-saving without any labor. . Therefore, as always, the effort to walk on the manhole where many observers are provided,
It is extremely reasonable to completely eliminate the labor for drainage work and the work of discharging earth and sand, and the time required for it.
It can provide a practical drainage device, and its industrial value is great.

[Brief description of the drawings]

FIG. 1 is a front view partially showing a cross section of an embodiment of the present invention.

FIG. 2 is a wiring diagram between a storage battery, a submersible pump, and a water level detection switch shown in FIG.

[Explanation of symbols]

1 is a support, 2 is a panel, 4 is a capacitor, 5 is a manhole, 5a is a bottom, 6 is a water level detection switch, 12 is a drain pipe, 13 and 14 are branch pipes, 13a is a tip, 15 is a drain groove, p Is a submersible pump.

Claims (1)

[Claims] 1. A solar cell panel is mounted on a support such as a support, while a submersible pump is installed in a manhole, and the solar cell and the submersible pump detect the level of stagnant water flowing into the manhole. Electrically connected via a switch, the drain pipe of the submersible pump is bifurcated in two directions, one branch pipe has an opening toward the bottom of the manhole, and the other branch pipe has an original drain. A drainage device in a manhole, wherein the drainage device is configured to communicate with a drainage ditch as a pipe.