JPH03293443A - Cleaning method of drainage and apparatus - Google Patents

Abstract

PURPOSE:To realize an automatic cleaning in a drainage, by temporally holding drain in a storage tank and discharging it at a time through a syphon to a drainage pipe when the stored volume reaches a certain volume. CONSTITUTION:A storage tank 2 is provided with a storage chamber 3, an inlet 4 of low-polluted water such as bath water or the like and a syphon 5. Next, a reversed U-type syphon pipe 6 is arranged in the syphon 5. And the connected opening 7 of the inlet is positioned at the bottom of the storage chamber 3 and the discharge opening 8 of the outlet is positioned at the sewer pipe 10. When the sewer level stored in the chamber 3 exceeds the uppermost bend 9 of the pipe 6, the whole sewer of the chamber 3 is discharged into the pipe 10 by the syphon principle to clean the inside of the pipe. Moreover, highly polluted waste tank including excrements may be installed to discharge it in the mixed flow condition. In this way, choking in drainage lines can be prevented without requiring other washing water and driving power and mainte nance inspection works can be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is designed to treat wastewater such as sewage and gray water related to human life and production activities by 1. The present invention relates to a method and apparatus for cleaning a drainage system leading to treatment equipment and the like.

<Conventional technology> In order to guide wastewater such as sewage or gray water to a treatment facility or other destination, conventionally, the wastewater flows into a drainage system such as a sewage pipe and is allowed to flow inside to reach the destination. I try to let them do it. The drainage system consists of a main pipe with a large diameter, branch pipes that connect each wastewater generation source with the main pipe, and a collection tank where the branch pipes are temporarily collected in front of the main pipe. Also, the diameter of the main pipe becomes narrower as it approaches the end of the drainage system.

<Problem to be solved by the invention> By the way, in such conventional sewage pipes, there is a risk that dust and the like contained in the wastewater may stagnate inside, and in particular, sticky substances such as human waste adhere to the inner wall and are difficult to drain away. Also, if it dries, it may stick and obstruct the flow of drainage, potentially causing clogging. This is especially the case with sewer pipes at the end where the diameter is narrow, and there are many cases where periodic inspection and cleaning are required. The present invention has been made by focusing on such conventional technology, and aims to provide a cleaning method and device for preventing clogging of sewer pipes due to dust, human waste, etc. and keeping the sewer pipes clean at all times. It is.

Means for Solving the Problems> In order to solve the above-mentioned problems, the drainage system cleaning method according to the present invention temporarily stores wastewater in a storage tank, and drains the wastewater from the storage tank through a siphon pipe. Alternatively, the low-concentration wastewater can be temporarily stored in a storage tank upstream of the confluence of low-concentration wastewater and high-concentration wastewater, and the low-concentration wastewater from this storage tank can be passed through a siphon pipe. It is designed to flow out all at once and join the high concentration wastewater.

The drainage system cleaning device according to the present invention includes a storage tank that temporarily stores wastewater, and a siphon pipe that drains the wastewater at once when a certain amount of wastewater is stored in the storage tank. Yes, or a drainage system is connected to a storage tank that temporarily stores low-concentration wastewater and a siphon pipe that drains the low-concentration wastewater all at once when a certain amount of low-concentration wastewater is stored in this storage tank. It also includes a merging means for merging low-concentration wastewater flowing out from the siphon pipe with high-concentration wastewater, and a connecting pipe for connecting the storage tank and the merging means. Furthermore, by partitioning one tank, a storage tank for storing low concentration wastewater and a merging means are integrated. In the above and below descriptions, "low concentration wastewater" refers to wastewater from baths, kitchens, washrooms, laundry areas, etc. that has a relatively low viscosity and contains little dust.
"Highly concentrated wastewater" is a term used to mean wastewater that contains human waste and has a relatively high viscosity (and a lot of dust).

<Function> According to the method and apparatus described above, it is possible to clean the drainage system using wastewater or low-concentration wastewater that has been discharged. That is, when the wastewater temporarily stored in the storage tank exceeds a certain amount, it is discharged at once into the drainage system by the siphon pipe, and the drainage system can be cleaned by the force and amount of water. Alternatively, upstream from the confluence of low-concentration wastewater and high-concentration wastewater, when the amount of low-concentration wastewater temporarily stored in a storage tank exceeds a certain amount, it is drained out at once by a siphon pipe. Then, the water is guided by a connecting pipe to the merging means to which the drainage system is connected, and merges with the downstream high-concentration wastewater, and the force and volume of the water makes it possible to wash away the high-concentration wastewater and clean the drainage system.

This siphon pipe temporarily stores wastewater or low-concentration wastewater in a storage tank chamber with its height as the highest water level, and when the water level exceeds the highest water level, the entire amount flows out at once according to the siphon principle.

<Embodiments> Hereinafter, preferred embodiments of the drainage system cleaning device according to the present invention will be described based on FIGS. 1 to 3, and methods will be explained each time as necessary.

The embodiment shown in FIG. 1 is a drainage system cleaning device 1 according to the present invention.
The storage tank 2 has a storage tank chamber 3, and is provided with an inlet 4 through which wastewater flows. Further, the storage tank 2 has an integrated siphon part 5, and a siphon tube 6 is provided inside the siphon part 5. The siphon pipe 6 is an inverted U-shaped cylinder provided hollow inside the siphon part 5, and has an inlet as a communicating lower facing near the bottom inside the storage tank chamber 3, and an outlet as a communication lower part for directing the flow to the outside. It is designated as exit 8. When the water level of the wastewater flowing in from the inlet 4 and stored inside the storage tank chamber 3 exceeds the uppermost bend 9, the entire amount of the wastewater inside the storage tank chamber 3 flows out to the sewer pipe 10, which is a drainage system, by the siphon principle. It is. In addition, as a means of combining a siphon tube with the storage tank 2, an inverted U-shaped siphon tube can be used, with the inlet facing near the bottom of the storage tank chamber 3 and the outlet facing the outflow port. It is also possible to have it presented externally.

The embodiment shown in FIG.
1 is a drainage system cleaning device 17 which is connected to the device 1 through a connecting pipe 16. The merging tank 11 has a merging chamber 12, and is provided with an inlet 13 into which high-concentration wastewater flows, and a sewage pipe 14, which is a drainage system, is connected to the vicinity of the bottom of the merging chamber 12. A connection port 15 provided in the merging tank 11 and an outlet 8 of the storage tank 2 are connected by a connection pipe 16.

In the drainage system cleaning device F in which the storage tank 2 and the merging tank 11 are separated and connected in this way, the low concentration wastewater flowing in from the inlet 4 of the storage tank 2 is transferred to the siphon in the siphon part 5 combined with the storage tank chamber 3. The water is temporarily stored inside the storage tank chamber 3 with the height H of the pipe 6 as the highest water level. Further, when the low concentration wastewater flows in and the water level exceeds the uppermost bend 9 of the siphon pipe 6, the entire amount flows out from the outlet 8 of the siphon pipe 6 according to the siphon principle. The low-concentration wastewater flowing out from the outlet 8 is guided through the connecting pipe 16 into the confluence chamber 12 into which the high-concentration wastewater flows into the confluence chamber 12 and into the sewer pipe 14.
This is to flush out and clean the high concentration wastewater inside. Note that this embodiment is of a simplified type, and does not include the merging tank 11, and the low concentration wastewater flowing out from the above-mentioned outlet 8 is transferred to the sewage pipe 14.
The high concentration wastewater may also be allowed to directly flow into the sewer pipe 14 downstream thereof.

FIG. 3 shows a drainage system cleaning device 27 in which a storage tank 18 and a merging tank 21 are integrated.

The storage tank 18 has a storage tank chamber 19 and is provided with an inlet 20 into which low-concentration wastewater flows. The merging tank 21 is a merging chamber 22
An inlet 23 through which highly concentrated wastewater flows is provided, and a sewer pipe 24 is connected near the bottom. A wall-shaped siphon portion 26 that is integrated with a siphon pipe 25 is provided between the storage tank chamber 19 and the merging chamber 22, and the storage tank I8 and the merging tank 21 are integrated. . The siphon tube 25 has a wall-like siphon portion 2.
It is a pipe-like, inverted U-shaped cylindrical body integrally held by the tank 6, and its inlet faces near the bottom inside the storage chamber 19, and the outlet faces near the bottom inside the merging chamber 22. The operation of this drainage system cleaning device 27 will be omitted from explanation as in the previous embodiment.

<Effects of the Invention> The method and device for cleaning a drainage system according to the present invention have the content as described above, and temporarily store wastewater or low-concentration wastewater and drain a predetermined amount into the drainage system at once. By doing so, the inside of the drainage system can be cleaned, preventing clogging due to dust, human urine, etc., and keeping it clean at all times. Furthermore, according to this method and device, it is possible to automatically clean the inside of the drainage system without the need to separately prepare washing water, which requires power, and the management, maintenance, and inspection can be reduced. .

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of a drainage system cleaning device according to the present invention; Fig. 2 is a perspective view showing an embodiment in which a storage tank and a merging tank are connected by a connecting pipe; and Fig. 3 The figure is a perspective view showing an embodiment in which a storage tank and a merging tank are integrated. Connecting pipe 1 Figure 3 0

Claims (5)

[Claims] (1) A method for cleaning a drainage system, in which wastewater is temporarily stored in a storage tank, and the wastewater from the storage tank is discharged into the drainage system at once through a siphon pipe. (2) A drainage system cleaning device comprising a storage tank for temporarily storing wastewater, and a siphon pipe for draining the wastewater at once into the drainage system when a certain amount of wastewater is stored in the storage tank. (3) Temporarily store low-concentration wastewater in a storage tank upstream of the confluence of low-concentration wastewater and high-concentration wastewater, and drain the low-concentration wastewater from this storage tank all at once through a siphon pipe to join the high-concentration wastewater. A drainage system cleaning method that allows you to (4) A drainage system is connected to a storage tank that temporarily stores low-concentration wastewater, and a siphon pipe that drains the low-concentration wastewater all at once when a certain amount of low-concentration wastewater is stored in this storage tank, and A drainage system cleaning device comprising a merging means for merging low-concentration wastewater flowing out from a siphon pipe with high-concentration wastewater, and a connecting pipe connecting the storage tank and the merging means. (5) The drainage system cleaning device according to claim 4, wherein the storage tank for storing low concentration wastewater and the merging means are integrated by partitioning one tank.