JP7499192B2 - Gutter facilities - Google Patents

Description

The present invention relates to a gutter system. More specifically, it relates to a gutter system that is constructed by connecting U-shaped gutter bodies.

Drainage drainage facilities are usually installed on the sides of roads. Many of these drainage facilities are made up of a series of U-shaped drains as specified by the JIS. These drainage facilities have square structures installed at regular intervals to accumulate dust and other particles generated on the road. When it rains, the dust and other particles generated on the road flow through the drains and accumulate in the square structures, and the accumulated dust and other particles are cleaned up periodically.

In this way, dust particles and other particles that are heavier in specific gravity than water can accumulate inside the square-shaped structure. However, oil and other particles can also leak from cars onto the road. In this case, oil, which has a lower specific gravity than water, cannot be removed by the square-shaped structure and can flow directly into rivers and other watercourses via the drains.

Patent Document 1 discloses a gutter equipped with an oil-water separation device. The gutter disclosed in this document has a configuration that can separate oil from miscellaneous wastewater. That is, the gutter is provided with multiple oil-water separation chambers, and these oil-water separation chambers are connected to each other by an overflow pipe. The inlet of this overflow pipe is provided below the outlet, so that on the upstream side, oils with a light specific gravity remain at the top of the oil-water separation chamber, and water with a heavy specific gravity moves through this overflow pipe to the oil-water separation chamber on the downstream side.

Japanese Utility Model Application Publication No. 6-82187

However, in the gutter of Patent Document 1, the most upstream oil-water separation chamber is configured so that water, etc. (hereinafter, water, liquids other than water, and liquids containing dust, etc. may be referred to as "water, etc.") flows directly from the gutter having a normal depth. For this reason, water, etc. may suddenly flow into the most upstream oil-water separation chamber, and in this case, the oil separated in the oil-water separation chamber is likely to flow into the downstream oil-water separation chamber. In other words, there is a problem that the oil-water separation function is easily impaired when the flow rate increases.
In addition, in the gutter of Patent Document 1, the movement of water from the upstream oil-water separation chamber to the downstream oil-water separation chamber is only via the overflow pipe close to the bottom of the oil-water separation chamber, so dust and other particles with a higher specific gravity than water accumulate only in the upstream oil-water separation chamber. This causes problems such as the entrance to the overflow pipe becoming clogged and the accumulation capacity of the water and other particles in this part of the oil-water separation chamber becoming smaller.

In view of the above circumstances, the present invention aims to provide a gutter facility with an oil-water separation function that can prevent the oil-water separation function from being impaired even when water or the like suddenly flows in.

The first invention relates to a gutter equipment comprising a U-shaped gutter body having a U-shaped cross section, the gutter equipment including a water passage section and an oil-water separation section having a deeper groove than the water passage section, the oil-water separation section having two or more chambers separated by an oil-water separation partition, the gutter equipment is provided with an inlet partition which prevents flow from the water passage section to the oil-water separation section and has an inlet orifice for water passage , the oil-water separation partition is provided with a communicating pipe which allows water etc. to pass from the upstream chamber to the downstream chamber while leaving oil in the upstream chamber, the oil-water separation partition is provided with a water passage hole together with the communicating pipe, the lower limit of the water passage hole is at the same height as the bottom surface of the oil-water separation section and the upper limit of the water passage hole is lower than the bottom surface of the water passage section located upstream of the communicating pipe .
The second invention is a gutter equipment of the first invention, characterized in that the lower end of the inlet of the communicating pipe is located below the midpoint between the height of the bottom surface of the water-passing section located upstream of the communicating pipe and the height of the bottom surface of the oil-water separation section.
The gutter equipment of the third invention is characterized in that, in the first or second invention, the communicating pipes are provided in each of the oil-water separation partitions, and the communicating pipes provided in adjacent oil-water separation partitions are arranged on different sides of a vertical plane passing through the axis of the flow direction of water, etc.

According to the first invention, in a gutter equipment having a water passage section and an oil-water separation section, an inlet partition is provided which obstructs the flow from the water passage section to the oil-water separation section and has an inlet orifice for water passage, so that even if the amount of water etc. flowing into the gutter increases, the flow rate of water etc. flowing into the oil-water separation section is limited to be less than a predetermined value, thereby preventing a deterioration in the oil-water separation function of the oil-water separation section.
In addition, an inlet partition is provided, and a connecting pipe is provided in the oil-water separation partition to pass water, etc. from the upstream chamber to the downstream chamber while leaving oil in the upstream chamber.This allows water, etc. to flow into the oil-water separation section at a flow rate restricted by the inlet partition, and the flow rate from the upstream chamber to the downstream chamber of the oil-water separation section is further restricted by the connecting pipe, thereby ensuring oil-water separation.
Furthermore, by providing the oil-water separation bulkhead with a predetermined shape of water passage hole together with the communicating pipe, it is possible to prevent dust and the like, which has a specific gravity greater than that of water, from accumulating only in the chamber upstream of the oil-water separation section, thereby preventing the communicating pipe from becoming clogged.
According to the second invention, by positioning the lower end of the inlet of the communicating pipe at a predetermined position, dust and other particles which have a higher specific gravity than water can be accumulated in the oil-water separation section while maintaining the oil-water separation function.
According to the third invention, the communicating pipes provided in adjacent oil-water separation partitions are arranged on different sides of a vertical plane passing through the axis of the flow direction of water, etc., thereby lengthening the time between when water, etc. flows into the oil-water separation section chamber and when it flows out, and thereby more reliably carrying out oil-water separation due to differences in specific gravity.

1 is a front cross-sectional view of a drainage system according to a first embodiment of the present invention (when the water level is relatively low). FIG. FIG. 2 is a cross-sectional view of the drainage system according to the first embodiment of the present invention when viewed from the front (when the water level is relatively high). FIG. 2 is a plan view of the gutter installation of FIG. 1 . 4 is a cross-sectional view of the gutter equipment of FIG. 1 taken along line IV-IV of the side surface. FIG. 2 is a partial cross-sectional view of the gutter facility of FIG. 1 from above. Fig. 6 is a cross-sectional view from the side of the gutter equipment of Fig. 1. Fig. 6(A) is a cross-sectional view in the plane VI(A)-VI(A), and Fig. 6(B) is a cross-sectional view in the plane VI(B)-VI(B). FIG. 6 is a front cross-sectional view of a gutter system according to a second embodiment of the present invention. Fig. 8 is a cross-sectional view from the side of the drainage system of Fig. 7. Fig. 8(A) is a cross-sectional view taken along the plane VIII(A)-VIII(A), and Fig. 8(B) is a cross-sectional view taken along the plane VIII(B)-VIII(B).

Next, an embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below is an example of a gutter system to embody the technical concept of the present invention, and the present invention does not limit the gutter system to the one shown below. Note that the size or positional relationship of the components shown in each drawing may be exaggerated for clarity of explanation.

First Embodiment
1 and 2 are front cross-sectional views of a gutter equipment 10 according to a first embodiment of the present invention. FIG. 1 shows a case where the water level S in the gutter equipment 10 is relatively low, and FIG. 2 shows a case where the water level S in the gutter equipment 10 is relatively high. Note that the only difference between FIG. 1 and FIG. 2 is the position of the water level S, so FIG. 1 is used to explain the front cross-sectional view of this embodiment. The gutter equipment 10 of this embodiment is installed, for example, along a highway. This gutter equipment 10 is constructed for the purpose of drainage to prevent water retention on roads, etc. The gutter equipment 10 according to this embodiment is configured by combining members such as a U-shaped gutter as described in JIS. These members are not limited to shapes as specified in JIS. There is no problem as long as it is configured to include a U-shaped gutter body that is U-shaped in the cross section perpendicular to the axial direction of the gutter, i.e., the direction in which water, etc. flows. In other words, the U-shaped gutter body includes not only U-shaped gutter bodies as specified in JIS, but also ones having dimensions other than those specified in JIS.

The gutter equipment 10 according to this embodiment is composed of a water passage section 11 and an oil-water separation section 12. In FIG. 1, water flowing into the gutter equipment 10 from a road or the like flows from left to right on the page of FIG. 1. The water passage section 11 mainly has the function of directing the water flowing in from the road or the like in a predetermined direction, and the oil-water separation section 12 mainly has the function of separating oils contained in the water from the water and storing it there.

As shown in FIG. 1, the water-passing section 11 is configured to include a first U-shaped side gutter body 20. The oil-water separation section 12 is configured to include a second U-shaped side gutter body 21. The grooves of the second U-shaped side gutter body 21 are deeper than the grooves of the first U-shaped side gutter body 20. As a result, the oil-water separation section 12 has deeper grooves than the water-passing section 11. The material of the first U-shaped side gutter body 20 and the second U-shaped side gutter body 21 in this embodiment is concrete, but is not limited to this. For example, they may be made of resin.

Figure 3 shows a plan view of the gutter equipment 10 according to this embodiment. The first U-shaped gutter body 20 and the second U-shaped gutter body 21 have openings on the upper side, and a lid 13 is provided to cover these openings. The lid 13 is provided with an inspection window 15 for checking the inside of the gutter of the gutter equipment 10, and a work window 16 for removing oils such as dust that accumulate in the oil-water separation section 12.

As shown in FIG. 1, the oil-water separation section 12 is provided with four oil-water separation partitions 22, and these oil-water separation partitions 22 provide the oil-water separation section 12 with five chambers. However, the number of oil-water separation partitions 22 is not limited to four. For example, there may be one oil-water separation partition 22 and two chambers. However, in order to ensure that the oil-water separation function of the oil-water separation section 12 works and to make the length of the oil-water separation section 12 in the direction of the flow of water, etc. as short as possible, it is preferable that there are four oil-water separation partitions 22.

The material of the oil-water separation partition 22 in this embodiment is concrete, but is not limited to this. For example, it may be made of resin or iron. The oil-water separation partition 22 in this embodiment is fixed to the second U-shaped side gutter body 21 by fitting it into a groove provided in a plane perpendicular to the flow direction of water, etc.

As shown in Figures 1 and 4, in the gutter equipment 10 according to this embodiment, an inlet partition 23 is provided to separate the first U-shaped gutter body 20 and the second U-shaped gutter body 21. The inlet partition 23 is provided to prevent the flow from the water passage section 11 to the oil-water separation section 12. The inlet partition 23 is provided with an inlet orifice 24. The inlet orifice 24 is a hole that penetrates the inlet partition 23, and water, etc. that flows into the gutter equipment 10 passes through the inlet orifice 24 and flows into the oil-water separation section 12.

In a gutter equipment 10 equipped with a water passage section 11 and an oil-water separation section 12, an inlet partition 23 is provided that obstructs the flow from the water passage section 11 to the oil-water separation section 12 and has an inlet orifice 24 for water passage. Even if the amount of water flowing into the gutter increases, the flow rate of water flowing into the oil-water separation section 12 is restricted to be less than a predetermined value, thereby preventing a decrease in the oil-water separation function of the oil-water separation section 12.

The material of the inlet bulkhead 23 in this embodiment is concrete, but is not limited to this. For example, it may be made of resin or iron. The shape of the inlet of the inlet orifice 24 in this embodiment is circular, as shown in Figure 4. The diameter of this circle is calculated based on the oil-water separation function of the oil-water separation section 12. For example, the diameter of the inlet orifice 24 is determined by the size of the communication pipe 25 of the oil-water separation section 12, which will be described later, and the size of the water passage hole 26 (see Figure 8), if provided.

The position where the inlet orifice 24 is provided is preferably such that the bottom of the inlet orifice 24 is at the same height as the bottom surface of the first U-shaped gutter body 20, i.e., the bottom surface of the water-passing section 11. Here, in this embodiment, the "bottom surface of the water-passing section 11" means the top surface of the bottom slab concrete constructed at the bottom of the first U-shaped gutter body 20 (see FIG. 4). By being at the same height as the bottom surface of the first U-shaped gutter body 20, dust and other particles contained in the water flowing through the first U-shaped gutter body 20 do not remain in the first U-shaped gutter body 20, but can flow into the oil-water separation section 12. In addition, the shape of the inlet of the inlet orifice 24 in this embodiment is circular, but is not limited to this. For example, it can be a rectangle or a triangle with a base at the bottom.

The oil-water separation partition 22 in this embodiment is preferably provided with a communication pipe 25. This communication pipe 25 allows water and the like to pass from the upstream chamber to the downstream chamber in the oil-water separation section 12 while leaving oil in the upstream chamber.

This principle will be explained in detail below. First, the communicating pipe 25 is an L-shaped pipe as shown in Figures 1 and 6. The communicating pipe 25 is provided so that one side of this L-shaped pipe is horizontal and the other side is vertical, and the end face of the vertical part faces downward. In this state, when water flows into the most upstream chamber of the oil-water separation section 12, the water level in this chamber rises. When the water level rises and the water reaches the bottom of the horizontal part of the communicating pipe 25, the water starts to flow from the upstream chamber to the downstream chamber. When the water first flows into the most upstream chamber, the oil in the water is located at the top because of its light specific gravity, and if the water level rises, some of the oil flows into the downstream chamber through the communicating pipe 25, but if the water level continues to rise, the area around the inlet of the communicating pipe 25 becomes water with less oil, so the oil remains in the upstream chamber and the water with less oil flows out into the downstream chamber.

Inlet partition 23 is provided, and connecting pipe 25 is provided in oil-water separation partition 22 to allow water, etc. to pass from the upstream chamber to the downstream chamber while leaving oil in the upstream chamber. This allows water, etc. to flow into oil-water separation section 12 at a flow rate limited by inlet partition 23, and further restricts the flow rate from the upstream chamber to the downstream chamber of oil-water separation section 12 by connecting pipe 25, ensuring oil-water separation.

The communicating pipe 25 according to this embodiment is an L-shaped pipe, but is not limited to this. The communicating pipe 25 according to this embodiment is also a combination of an elbow and a nipple, which are piping parts, but is not limited to this. The L-shaped end of the communicating pipe 25 according to this embodiment has a surface perpendicular to its axis, but is not limited to this. The lowest part inside the horizontal part of the communicating pipe 25 according to this embodiment is at the same height as the bottom surface of the water passage section 11, but is not limited to this.

In addition, it is preferable that the lower end of the inlet of the communicating pipe 25 in this embodiment is located lower than the midpoint between the height of the bottom surface of the water passage section 11 located upstream of the communicating pipe 25 and the height of the bottom surface of the second U-shaped gutter body 21 that forms the oil-water separation section 12. Here, in this embodiment, the "bottom surface of the oil-water separation section 12" means the upper surface of the bottom slab concrete constructed at the bottom of the second U-shaped gutter body 20 (see Figure 6).

By positioning the lower end of the inlet of the communicating pipe 25 at a specified position, dust and other particles with a higher specific gravity than water can be accumulated in the oil-water separation section 12 while maintaining the oil-water separation function.

Figure 5 shows a cross-sectional view of the oil-water separation section 12 of the gutter equipment 10 according to this embodiment as viewed from above, and Figure 6 shows a cross-sectional view as viewed from the side (upstream side). Figure 6(A) is a cross-sectional view in plane VI(A) of Figure 1, and Figure 6(B) is a cross-sectional view in plane VI(B) of Figure 1. One communicating pipe 25 according to this embodiment is provided in each of the oil-water separation partitions 22. Of these communicating pipes 25, those provided in adjacent oil-water separation partitions 22 are arranged on different sides of the vertical plane E passing through the axis of the flow direction of water, etc. In Figures 5 and 6, the vertical plane E passing through the axis of the flow direction of water, etc. is shown by a dashed line. In the oil-water separation bulkhead 22a located at the leftmost position in Figure 5, the communicating pipe 25 is located above the vertical plane E in Figure 5 (to the left of the vertical plane E in Figure 6), and in the oil-water separation bulkhead 22b adjacent to the oil-water separation bulkhead 22a located at the leftmost position, the communicating pipe 25 is located below the vertical plane E in Figure 5 (to the right of the vertical plane E in Figure 6).

The communicating pipes 25 provided on adjacent oil-water separation partitions 22 are arranged on different sides of the vertical plane E passing through the axis of the flow direction of the water, etc., so that the water, etc., moves as shown by the arrows in Figure 5, and the residence time of the water, etc. in each chamber is longer. Since the time from when the water, etc. flows into the chamber of the oil-water separation section 12 to when it flows out is longer, more time is gained for the mixed water and oil to separate, and oil-water separation is more reliable. In other words, the situation in which the water, etc., flowing out from the upstream chamber is left remaining in the downstream chamber for a long time is repeated, so the oil can be captured reliably.

In this embodiment, the inlet partition 23 is positioned exactly between the water passage section 11 and the oil-water separation section 12, but the position of the inlet partition 23 is not limited to this. For example, it is also possible to provide the inlet partition 23 at a position a predetermined distance away from the oil-water separation section 12.

In addition, in this embodiment, the oil-water separation function in the oil-water separation section 12 is achieved by the presence of the communicating pipe 25, but the configuration that achieves the oil-water separation function is not limited to a configuration that has the communicating pipe 25. For example, it is also possible to achieve the oil-water separation function by providing a hole at a predetermined height for passage through the oil-water separation partition 22.

In this embodiment, a configuration in which one oil-water separation section 12 is provided in the water passage section 11 has been described, but the gutter equipment 10 according to the present invention is not limited to this configuration. Depending on the road conditions, multiple oil-water separation sections 12 may be provided at predetermined intervals.

Second Embodiment
Fig. 7 is a cross-sectional view from the front of the gutter equipment 10 according to the second embodiment of the present invention, and Fig. 8 is a cross-sectional view from the side (upstream side). Fig. 8(A) is a cross-sectional view taken along plane VIII(A) in Fig. 7, and Fig. 8(B) is a cross-sectional view taken along plane VIII(B) in Fig. 7. Regarding the gutter equipment 10 according to this embodiment, only the differences from the gutter equipment 10 according to the first embodiment will be described, and descriptions of the same parts will be omitted.

The oil-water separation partition 22 in this embodiment is provided with a water passage hole 26 along with a connecting pipe 25. The water passage hole 26 has a horizontally elongated rectangular shape with the corners trimmed as shown in FIG. 8. In this embodiment, the lower limit of the water passage hole 26 is at the same height as the bottom surface of the oil-water separation section 12, and the upper limit of the water passage hole 26 is lower than the bottom surface of the water passage section 11 located upstream of the connecting pipe 25. In this embodiment, as in the first embodiment, the "bottom surface of the oil-water separation section 12" refers to the upper surface of the bottom slab concrete constructed at the bottom of the second U-shaped side gutter body 20 (see FIG. 8), and the "bottom surface of the water passage section 11" refers to the upper surface of the bottom slab concrete constructed at the bottom of the first U-shaped side gutter body 20.

The oil-water separation partition 22 is provided with a water passage hole 26 of a predetermined shape together with a communication pipe 25, which prevents dust and other particles with a higher specific gravity than water from accumulating only in the chamber upstream of the oil-water separation section 12. This prevents the communication pipe 25 from becoming clogged.

In this embodiment, the shape of the water passage hole 26 is rectangular, but is not limited to this. For example, it may be circular, taking into consideration ease of work during production.

REFERENCE SIGNS LIST 10 Gutter equipment 11 Water passage section 12 Oil-water separation section 20 First U-shaped gutter body 21 Second U-shaped gutter body 22 Oil-water separation partition 23 Inflow partition 24 Inflow orifice 25 Connecting pipe 26 Water passage hole E Vertical surface

Claims (3)

A gutter facility consisting of a U-shaped gutter body having a U-shaped cross section,
The gutter equipment includes a water passage section and an oil-water separation section having a deeper groove than the water passage section,
The oil-water separation section has two or more chambers separated by an oil-water separation partition,
The gutter equipment is provided with an inflow partition wall that prevents a flow from the water passage section to the oil-water separation section and has an inflow orifice for water passage ,
The oil-water separation bulkhead has:
A communication pipe is provided for passing water or the like from the upstream chamber to the downstream chamber while leaving oil in the upstream chamber,
The oil-water separation partition is provided with a water passage hole together with the communicating pipe,
The lower limit of the water passage hole is at the same height as the bottom surface of the oil-water separation section,
The upper limit of the water passage hole is lower than the bottom surface of the water passage portion located on the upstream side of the communication pipe.
A gutter facility characterized by the above. The lower end of the inlet of the communicating pipe is located below the midpoint between the height of the bottom surface of the water passage section located upstream of the communicating pipe and the height of the bottom surface of the oil-water separation section.
The drainage system according to claim 1 . The communication pipes are provided in each oil-water separation bulkhead,
The communicating pipes provided in adjacent oil-water separation bulkheads are arranged on different sides of a vertical plane passing through the axis of the flow of water, etc.
The gutter facility according to claim 1 or 2 .