JPS6343267Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a sewage basin used temporarily in a combined sewer system constructed in the basin of an unimproved river, and is designed to drain sewage and rainwater until the river improvement is completed. This is used as a temporary diversion system to treat wastewater.

[Conventional technology]

In order to disseminate public sewage systems in areas where it is not possible to maintain consistency with river improvements, the system is designed to prevent rainwater from rapidly flowing into rivers during rainfall and flooding the rivers until river improvements are completed. For the time being, a provisional diversion system has been adopted and its use is being promoted.

In combined sewer systems, in order to collect rainwater at the same time, existing rainwater drainage facilities such as U-shaped gutters on both sides or one side of the road are removed, and instead, L-shaped gutters are used to collect and treat rainwater in the sewer pipe through a rainwater basin. (When rainwater exceeds a certain amount, it is discharged into rivers.) Therefore, if unimproved river areas are developed using this combined method, large amounts of rainwater temporarily collected by the widely constructed sewer pipes will suddenly flow into the river.
This will cause flooding. For this reason, in areas where river improvements have not yet been made, sewers will be constructed as a combined system for the future, but as a temporary measure until the river improvement is completed.
A temporary diversion system will be adopted to accommodate only wastewater.

Incidentally, rainwater is generally treated by infiltrating underground or flowing naturally into rivers by rainwater drainage facilities such as U-shaped gutters, but because it takes a long time to reach the river, flooding is rare. Therefore, the absolute conditions for the above-mentioned temporary diversion system are that the existing rainwater drainage facilities should continue to exist, and sewage basins should be installed to collect only wastewater into the public sewer system.

In this way, in the temporary diversion system, the existing U-shaped gutter must be maintained, so the installation location of the sewage basin becomes an issue. As a general rule, sewage basins are not intended to be installed within residential areas, so they are necessarily located within road premises, and sewage basins are installed using the following method. In other words, it is a cutting method that bypasses the U-shaped gutter.

A round pit method is installed closer to the center of the road, avoiding U-shaped gutters.

An inner lid method that includes a sewage basin with an inner lid.

However, the cutting and rounding methods are difficult to maintain on narrow roads, roads where heavy vehicles pass, and roads with many underground structures, as well as the appearance of the road. Because there are many problems,
The middle lid method is being standardized.

However, the sewage basin that is attached as an inner lid method is attached to the opposite wall of the frame that is replaced and placed above the existing sewage basin to which the sewer pipe is connected below the L-shaped side gutter.
It had a through hole that matched the side groove, and an opening on the bottom into which an inner lid was fitted. However, since this sewage basin is a concrete product, the members are thick due to strength issues.
Furthermore, due to problems with the adhesion strength with reinforcing bars and inner lid material,
The inner diameter of the lower cesspit 2 (eg, 50 cm) was considerably narrowed (eg, 31 cm) at the inner lid. As a result, the workability of normal maintenance work is poor and requires a lot of time and effort.In particular, it is impossible to use tools and instruments to remove obstacles, and the work is currently done manually. .

Furthermore, the inflowing earth and sand tend to accumulate inside the frame, and the locking part between the inner lid and the frame body also tends to collect dirt and earth, and there is also the disadvantage that the inner lid floats up due to an increase in the internal pressure of the sewage basin. It was hot.

[Problem that the invention attempts to solve]

The present invention solves all the drawbacks of the conventional inner lid type sewage basin, makes the whole body lighter, makes work easier and more efficient, and does not restrict existing products. This is what we are trying to provide.

[Means for solving problems]

The present invention is a sewage basin that is attached to the upper part of a sewage basin that is buried below an L-shaped side gutter and connected to a sewer pipe, and is composed of a frame body having a continuous edge and an inner lid. The top surface is open, and the opposing sides are provided with through holes that match the existing U-shaped grooves, and the bottom surface is provided with an opening that leads to the sewage basin to which the sewage pipe is connected and into which the inner lid is fitted, The fitting portion between the opening and the inner lid is made into a V-cut, and a diversion weir matching the width of the U-shaped gutter is attached to the upper surface of the inner lid,
This sewage basin is characterized in that a stopper for preventing surfacing is provided on the lower surface of the inner lid to be engaged with the opening.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings.
It is a sewage basin that is temporarily replaced with the upper part 4 of an existing sewage basin 3 which is buried below and connected to a sewage pipe 2, and has a continuous ridge edge as shown in Figures 1 to 4. It consists of a cubic frame 5 and an inner lid 6. An opening 7 located below the existing L-shaped gutter 1 is provided on the upper surface of the frame 5, and through holes 9, 9 are provided on the opposing sides to match the existing U-shaped gutter 8, respectively. An opening 10 is provided which communicates with the sewage basin 3 and into which the inner lid 6 is fitted.

Although the opening 9 does not necessarily have to be placed on one side of the frame 5 as in the illustrated example, it is preferable that the side wall of the frame 5 be connected to one side wall of the U-shaped gutter 8. The fitting part between the inner lid 6 and the opening 10 has a V shape as shown in the illustration.
It is important that the inner lid 6 has a diversion weir 1 that matches the width of the U-shaped gutter 8 on the top surface of the inner lid 6.
1, and a floating prevention stopper 13 is provided on the lower surface of the inner lid 6, which is inserted into a notch 12 (see Fig. 4) provided around the opening 10 and is locked around the opening 10 by rotation. There is.

In the figure, 14 is a rectifying wall formed in a part other than the U-shaped gutter 8 to prevent dirt from accumulating in the corner of the frame 5, and 15 is a locking piece for lifting the inner lid 6. show.

The frame body 5 and the inner lid 6 may be made of any material such as concrete, metal, wood, or synthetic resin, but in order to improve work efficiency, synthetic resin or other materials that are lighter and more flexible than concrete are preferable. , Reusing plastic waste is also desirable because it leads to resource conservation.

Furthermore, if at least a portion of the inner lid 6 is made of a transparent material, it will be convenient to observe the situation inside the sewage basin 3.

When adopting the above-mentioned temporary diversion system, the frame body 5 configured in this way is temporarily replaced with the upper part 4 of the existing sewage basin 3 as shown in the fourth figure, and the through hole 9 is replaced with the upper part 4 of the existing wastewater basin 3. The inner lid 6 is fitted into the opening 10 and locked in alignment with the side groove 8. In this case, the frame 5 has a continuous ridge edge, so it has a high strength as a whole, and can withstand use even if the required wall thickness of each part is thinned, and as a result, the whole frame is lightweight. Furthermore, since the opening area of the opening 10 can be increased, cleaning inside the sewage basin 3 is also facilitated.

Thus, by replacing the upper part 4 of the existing sewage basin 3 with the sewage basin of the present invention, rainwater that has entered the frame 5 from the L-shaped gutter 1 through the opening 7 can flow into the sewage basin 3. Instead, wastewater is treated separately from wastewater through the opening 9 and the U-shaped gutter 8. At this time, the inner lid 6
Since the opening 10 of the frame body 5 is fitted with a V-cut, the fitting is kept in an airtight state, and not only does it prevent dust and dirt from entering, but it can also withstand wear and tear and last for a long period of time. enable the use of In addition, the diversion weir 11 allows the sediment flowing into the frame 5 to flow away together with rainwater without being retained, and even if the sewage basin 3 is filled with sewage and the internal pressure increases, the stopper for preventing flotation is provided. 12 prevents the inner lid 6 from floating.

As mentioned above, when the combined sewer system is temporarily changed to a separate system and the river improvement is completed and it is used as a combined sewer system, the frame body 5 and the inner lid 6 will be unnecessary, so the above-mentioned The upper part 4 of the existing sewage basin 3 will be replaced again.

In addition, the inner lid type sewage basin of the present invention is not only able to be replaced with the upper part of the existing sewage basin 3 as described above, but also allows the upper part to be integrally formed with the structure of the present invention when installing the sewage basin 3. By opening and closing the inner lid 6, it is possible to switch between the merging type and the separating type.

[Effect of idea]

As described above, the present invention has many beneficial effects as follows.

Existing products can be used as they are for edge masses of sewage basins, side gutters, etc., and replacement with existing products becomes easy.

The frame has great strength, making it possible to bring the diameter of the inner lid as close as possible to the inner diameter of the existing sewage basin, and being lightweight, offering excellent construction and workability.

The shape of the fitting part of the inner lid makes it easy to attach and remove the inner cover, improves sealing performance, and allows long-term use even if it wears out.
Sediment does not accumulate.

The diversion weir allows rainwater to flow smoothly and prevents sediment from accumulating in the frame.

Even if the internal pressure of the sewage basin increases, the inner lid will not float to the surface.

By opening and closing the inner lid, it can be switched to a merging type or a separate type.

It will function satisfactorily without damaging the existing rainwater drainage facility, and improve work efficiency in terms of maintenance and management.

[Brief explanation of drawings]

Figure 1 is a plan view showing one embodiment of the present invention;
The figure is a vertical side view, FIG. 3 is a sectional view taken along the line -- in FIG. 2, FIG. 4 is a plan view of the opening that locks the inner lid, FIG. The figure is a longitudinal side view of the sewage basin showing its state before use. 1...L-shaped gutter, 2...Sewage pipe, 3...Sewage basin, 4
... Upper part, 5 ... Frame body, 6 ... Inner lid, 7, 10 ... Opening, 8 ... U-shaped gutter, 9 ... Opening, 11 ... Direction weir, 1
2... Notch, 13... Stopper for preventing floating, 14...
rectification wall.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A sewage basin attached to the upper part of a sewage basin buried below an L-shaped side gutter and connected to a sewage pipe, which has a frame and an inner lid having a continuous edge. The upper surface of the frame is open, and the opposing sides are provided with through holes that match the existing U-shaped grooves, and the bottom surface is connected to the sewage basin to which the sewer pipe is connected, into which the inner lid is fitted. An opening is provided, the fitting part between the opening and the inner lid is made into a V-cut, and a diversion weir matching the width of the U-shaped gutter is attached to the upper surface of the inner lid, and a flow diversion weir corresponding to the width of the U-shaped gutter is attached to the lower surface of the inner lid, and the fitting part between the opening and the inner lid is made into a V-cut. A sewage basin characterized by being provided with a stopper to prevent floating. 2 Utility model registration claim 1, in which at least a portion of the inner lid is formed of a transparent material
Sewage basin mentioned in section.