JP2022107289A - Side ditch facility - Google Patents

Abstract

To provide a side ditch facility with an oil-water separation function that can prevent damage to the oil-water separation function even in the case of a sudden inflow of water or other substances.SOLUTION: A side ditch facility 10 consists of a U-shaped side ditch body with a U-shaped cross section. The side ditch facility 10 includes a water passage section 11 and an oil-water separation section 12 whose trench is deeper than the water passage section 11. The oil-water separation section 12 has two or more chambers separated by an oil-water separation bulkhead 22. Then, there is an inflow bulkhead 23 with an inflow orifice 24 for water flow, which obstructs the flow from the water passage section 11 to the oil-water separation section 12. With this configuration, the flow rate of water flowing into the oil-water separating section 12 is restricted to be less than a predetermined value even when the amount of water flowing into the side ditch increases, thereby preventing the oil-water separation section 12 from losing its function of oil-water separation.SELECTED DRAWING: Figure 1

Description

The present invention relates to gutter equipment. More specifically, the present invention relates to a gutter facility configured by connecting U-shaped gutter bodies.

A gutter facility for drainage is usually installed on the side of the road. Most of these gutter facilities are configured by connecting U-shaped gutters specified in JIS. In this gutter facility, a box-shaped structure for accumulating dust and the like generated on the road is provided at regular intervals. Dust and the like generated on this road are accumulated in the box-shaped structure via the gutter during rainfall, and the accumulated dust and the like are cleaned at regular intervals.

Dust and the like having a specific density heavier than that of water can be accumulated in the box-shaped structure. However, on the road, oil from automobiles may leak. In this case, oils having a lighter specific density than water could not be removed by this box-shaped structure, and there was a possibility that they would flow out as they were into rivers and the like via gutters.

Patent Document 1 discloses a gutter with an oil-water separator. The gutters disclosed in this document have a configuration capable of separating oil from miscellaneous wastewater. That is, a plurality of oil-water separation chambers are provided in the gutters, and the oil-water separation chambers communicate with each other by an overflow pipe. Since the inflow port of this overflow pipe is provided below the outflow port, oils having a light specific density remain on the upper side of the oil-water separation chamber on the upstream side, and water having a heavy specific density flows downstream through this overflow pipe. Move to the oil-water separation chamber on the side.

Square root extraction 6-82187

However, in the gutter of Patent Document 1, the oil-water separation chamber on the most upstream side is directly referred to as water or the like (hereinafter, water and a liquid other than water, and a liquid containing dust or the like as "water or the like" from the gutter having a normal depth. It is configured so that (sometimes called) flows in. Therefore, water or the like may suddenly flow into the oil-water separation chamber located on the most upstream side, and at this time, the oils separated in the oil-water separation chamber tend to flow into the oil-water separation chamber on the downstream side. That is, there is a problem that the oil-water separation function is likely to be impaired when the flow rate increases.
Further, in the gutter of Patent Document 1, the movement of water or the like from the oil-water separation chamber on the upstream side to the oil-water separation chamber on the downstream side uses only the overflow pipe close to the bottom surface of the oil-water separation chamber, so that it is the most upstream side. Dust, etc., which has a heavier specific gravity than water, is accumulated only in the oil-water separation chamber on the upstream side. Therefore, there is a problem that the entrance of the overflow pipe is blocked and the storage capacity of water or the like in the oil-water separation chamber in this portion is reduced.

In view of the above circumstances, the present invention provides a gutter facility having an oil-water separation function, which can prevent the oil-water separation function from being impaired even when water or the like suddenly flows in. The purpose.

The gutter equipment of the first invention is a gutter equipment having a U-shaped gutter body having a U-shaped cross section, and the gutter equipment separates a water passage portion and an oil-water separation having a deeper groove than the water passage portion. The oil-water separation unit has two or more chambers separated by an oil-water separation partition wall, and the gutter equipment obstructs the flow from the water-passing unit to the oil-water separation unit to allow water to flow. It is characterized in that an inflow partition having an inflow orifice for the purpose is provided.
In the first invention, the side groove facility of the second invention communicates with the oil-water separation partition wall to allow water or the like to pass from the upstream room to the downstream room while leaving oils in the upstream room. It is characterized in that a pipe is provided.
In the gutter equipment of the third invention, in the second invention, the lower end of the inflow port of the communication pipe is located on the upstream side of the communication pipe. It is characterized in that it is located below the middle of.
In the second or third invention, the gutter equipment of the fourth invention is provided with one communication pipe in each of the oil-water separation partition walls, and the communication pipes provided in the adjacent oil-water separation partition walls allow water and the like to flow. It is characterized in that they are arranged on different sides with respect to the vertical plane passing through the axis of the direction.
In any of the second to fourth inventions, the side groove facility of the fifth invention is provided with a water passage hole in the oil-water separation partition wall together with the communication pipe, and the lower limit of the water passage hole is the oil-water separation portion. The height is the same as the bottom surface of the water passage portion, and 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.

According to the first invention, in a gutter facility provided with a water passage portion and an oil / water separation portion, an inflow partition wall having an inflow orifice for blocking the flow from the water passage portion to the oil / water separation portion and having an inflow orifice for water passage is provided. Therefore, even if the amount of water or the like flowing into the gutter increases, the flow rate of the water or the like flowing into the oil-water separation part is limited to be less than a predetermined value. Can be suppressed from decreasing.
According to the second invention, an inflow partition is provided, and a communication pipe for passing water or the like from the upstream room to the downstream room while leaving oils in the upstream room in the oil-water separation partition. By providing, the flow rate of water, etc. limited by the inflow partition flows into the oil-water separation section, and the flow rate from the room on the upstream side to the room on the downstream side of the oil-water separation section is restricted by the communication pipe. Oil-water separation is ensured.
According to the third invention, since the lower end of the inflow port of the communication pipe is positioned at a predetermined position, dust or the like having a heavier specific density than water is accumulated in the oil-water separation portion while maintaining the oil-water separation function. Can be done.
According to the fourth invention, the communication pipes provided in the adjacent oil-water separation partition walls are arranged on different sides with respect to the vertical plane passing through the axis in the flow direction of water or the like, thereby separating the oil-water. The time from the inflow of water or the like to the outflow of water into the room becomes longer, and oil-water separation due to the difference in specific gravity is performed more reliably.
According to the fifth invention, since the oil-water separation partition wall is provided with a water passage hole of a predetermined form together with a communication pipe, dust and the like having a heavier specific density than water can be discharged only to the room on the upstream side of the oil-water separation portion. Accumulation can be suppressed. This can prevent the communication pipe from being clogged.

It is sectional drawing from the front of the gutter equipment which concerns on 1st Embodiment of this invention (when the water level is relatively low). It is sectional drawing from the front of the gutter equipment which concerns on 1st Embodiment of this invention (when the water level is relatively high). It is a top view of the gutter equipment of FIG. It is sectional drawing from the side surface direction in the IV-IV plane of the gutter equipment of FIG. It is a partial cross-sectional view from above of the gutter equipment of FIG. It is sectional drawing from the side surface direction of the gutter equipment of FIG. FIG. 6 (A) is a cross-sectional view on the VI (A) -VI (A) plane, and FIG. 6 (B) is a cross-sectional view on the VI (B) -VI (B) plane. It is sectional drawing from the front of the gutter equipment which concerns on 2nd Embodiment of this invention. It is sectional drawing from the side surface direction of the gutter equipment of FIG. FIG. 8A is a cross-sectional view taken along the plane VIII (A) -VIII (A), and FIG. 8B 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 embodiments shown below exemplify the gutter equipment for embodying the technical idea of the present invention, and the present invention does not specify the gutter equipment as the following. The size or positional relationship of the members shown in each drawing may be exaggerated to clarify the explanation.

(First Embodiment)
1 and 2 are cross-sectional views from the front of the gutter equipment 10 according to the 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. Since the only difference between FIGS. 1 and 2 is the position of the water level S, FIG. 1 is used for explaining the cross-sectional view from the front of the present embodiment. The gutter equipment 10 of the present embodiment is provided, for example, along a highway. This gutter facility 10 is constructed for the purpose of drainage to prevent water retention on roads and the like. The gutter equipment 10 according to the present embodiment is configured by combining members such as U-shaped gutters described in JIS. These members are not limited to the shapes specified in JIS. There is no problem as long as the cross section is perpendicular to the axial direction of the groove, that is, the direction in which water or the like flows, and is configured to include a U-shaped gutter body. That is, the U-shaped gutter body includes a U-shaped gutter defined by JIS and a gutter having dimensions other than those specified by JIS.

The gutter equipment 10 according to the present embodiment includes a water passage portion 11 and an oil-water separation portion 12. In FIG. 1, water or the like that has flowed into the gutter equipment 10 from a road or the like flows from left to right on the paper of FIG. The water passage unit 11 mainly has a function of flowing water or the like flowing from a road or the like in a predetermined direction, and the oil-water separation part 12 separates oils contained in the water or the like from the water or the like and there. It mainly has the function of storing.

As shown in FIG. 1, the water passage portion 11 includes the first U-shaped gutter body 20. Further, the oil-water separating portion 12 is configured to include a second U-shaped gutter body 21. The groove of the second U-shaped gutter body 21 is deeper than the groove of the first U-shaped gutter body 20. As a result, the oil-water separation portion 12 has a deeper groove than the water passage portion 11. The material of the first U-shaped gutter body 20 and the second U-shaped gutter body 21 according to the present embodiment is concrete, but is not limited thereto. For example, it may be made of resin.

FIG. 3 shows a plan view of the gutter equipment 10 according to the present embodiment. The first U-shaped gutter body 20 and the second U-shaped gutter body 21 have an opening on the upper side, and a lid 13 is provided so as to close the opening. The lid 13 is provided with a confirmation window 15 for confirming the inside of the groove of the gutter equipment 10, and a work window 16 for removing oils such as dust accumulated in the oil-water separation unit 12.

As shown in FIG. 1, the oil-water separation section 12 is provided with four oil-water separation partition walls 22, and the oil-water separation section 12 has five chambers due to the oil-water separation partition wall 22. However, the number of the oil-water separation partition walls 22 is not limited to four. For example, there may be one oil-water separation partition wall 22 and two rooms. However, in order to ensure that the oil-water separation function of the oil-water separation unit 12 works and to make the length of the oil-water separation unit 12 in the flow direction of water or the like as short as possible, it is preferable that the oil-water separation partition wall 22 has four.

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

As shown in FIGS. 1 and 4, in the gutter equipment 10 according to the present embodiment, an inflow partition wall 23 is provided so as to separate the first U-shaped gutter body 20 and the second U-shaped gutter body 21. The inflow partition wall 23 is provided so as to obstruct the flow from the water passage portion 11 to the oil / water separation portion 12. An inflow orifice 24 is provided in the inflow partition wall 23. The inflow orifice 24 is a hole penetrating the inflow partition wall 23, and water or the like that has flowed into the gutter equipment 10 passes through the inflow orifice 24 and flows into the oil-water separation portion 12.

In the gutter facility 10 provided with the water passage portion 11 and the oil / water separation portion 12, an inflow partition 23 having an inflow orifice 24 for blocking the flow from the water passage portion 11 to the oil / water separation portion 12 is provided. Therefore, even if the amount of water or the like flowing into the gutter increases, the flow rate of the water or the like flowing into the oil-water separation unit 12 is limited so as to be smaller than a predetermined value. It is possible to suppress the deterioration of the function of.

The material of the inflow partition wall 23 according to the present embodiment is concrete, but is not limited thereto. For example, it may be made of resin or iron. Further, the shape of the inflow port of the inflow orifice 24 according to the present embodiment is a circular shape as shown in FIG. The diameter of this circular shape is calculated by the ability of the oil-water separation function of the oil-water separation unit 12. For example, the diameter of the inflow orifice 24 is determined by the size of the communication pipe 25 of the oil-water separation portion 12, which will be described later, and the size of the water passage hole 26 (see FIG. 8) when the water passage hole 26 (see FIG. 8) is provided. ..

The position where the inflow orifice 24 is provided is preferably such that the lowermost portion of the inflow orifice 24 is at the same height as the bottom surface of the first U-shaped gutter body 20, that is, the bottom surface of the water passage portion 11. Here, in the present embodiment, the "bottom surface of the water passage portion 11" means the upper surface of the bottom slab concrete constructed under the first U-shaped gutter body 20 (see FIG. 4). Since the height is the same as the bottom surface of the 1st U-shaped gutter body 20, dust and the like contained in the water and the like flowing through the 1st U-shaped gutter body 20 do not stay in the 1st U-shaped gutter body 20 and the oil-water separation portion. This is because it can flow into 12. Further, the shape of the inflow port of the inflow orifice 24 according to the present embodiment is circular, but is not limited to this. For example, it can be a quadrangle or a triangle with a base at the bottom.

It is preferable that the oil-water separation partition wall 22 according to the present embodiment is provided with a communication pipe 25. By the communication pipe 25, in the room in the oil-water separation section 12, water or the like passes from the room on the upstream side to the room on the downstream side while leaving oils in the room on the upstream side.

This principle will be described in detail below. First, the communication pipe 25 is an L-shaped pipe as shown in FIGS. 1 and 6. A communication pipe 25 is provided so that one side of the L-shaped pipe is horizontal, the other side is vertical, and the end face of the vertical portion is directed downward. In this state, if water or the like flows into the room on the most upstream side of the oil-water separation unit 12, the water level in this room rises. When the water level rises and the water or the like reaches the bottom of the horizontal portion of the communication pipe 25, the water or the like begins to flow from the room on the upstream side to the room on the downstream side. When water or the like first flows into the most upstream room, the oils in the water or the like are located on the upper side in the water or the like because of their light specific gravity, and when the water level rises as it is, the oil passes through the communication pipe 25. Some of the types flow to the room on the downstream side, but if the water level continues to rise, the area around the inlet of the communication pipe 25 will become water with less oil, so oils Remains in the room on the upstream side, and water with less oil flows out into the room on the downstream side.

The inflow partition 23 is provided, and the oil-water separation partition 22 is provided with a communication pipe 25 for allowing water or the like to pass from the upstream room to the downstream room while leaving oils in the upstream room. As a result, the flow rate of water or the like limited by the inflow partition 23 flows into the oil-water separation section 12, and the flow rate from the room on the upstream side to the room on the downstream side of the oil-water separation section 12 is further restricted by the communication pipe 25. Oil-water separation is ensured.

The form of the communication pipe 25 according to the present embodiment is an L-shaped pipe, but the present invention is not limited to this. Further, the communication pipe 25 according to the present embodiment is a combination of elbows and nipples of piping parts, but is not limited thereto. The L-shaped end of the communication pipe 25 according to the present embodiment has a plane perpendicular to the axis thereof, but is not limited thereto. The lowermost portion of the inside of the horizontal portion of the communication pipe 25 according to the present embodiment is at the same height as the bottom surface of the water passage portion 11, but is not limited to this.

The lower end of the inflow port of the communication pipe 25 according to the present embodiment is the height of the bottom surface of the water passage portion 11 located on the upstream side of the communication pipe 25 and the second U-shaped gutter body 21 forming the oil-water separation portion 12. It is preferably located below the middle of the height of the bottom surface of the. Here, in the present embodiment, the "bottom surface of the oil-water separation portion 12" means the upper surface of the bottom slab concrete constructed in the lower part of the second U-shaped gutter body 20 (see FIG. 6).

Since the lower end of the inflow port of the communication pipe 25 is positioned at a predetermined position, dust or the like having a heavier specific gravity than water can be accumulated in the oil-water separation unit 12 while maintaining the oil-water separation function.

FIG. 5 shows a cross-sectional view of the portion of the oil-water separation portion 12 of the gutter equipment 10 according to the present embodiment as viewed from above, and FIG. 6 shows a cross-sectional view as viewed from the side surface direction (upstream side). 6 (A) is a cross-sectional view on the VI (A) plane of FIG. 1, and FIG. 6 (B) is a cross-sectional view on the VI (B) plane of FIG. One communication pipe 25 according to the present embodiment is provided on each of the oil-water separation partition walls 22. Among these communication pipes 25, those provided on the adjacent oil-water separation partition walls 22 are arranged on different sides with respect to the vertical surface E passing through the axis in the flow direction of water or the like. In FIGS. 5 and 6, what is shown by the alternate long and short dash line is the vertical plane E passing through the axis in the flow direction of water or the like. Then, in the oil-water separation partition wall 22a located on the leftmost side of FIG. 5, the communication pipe 25 is located on the upper side of the vertical surface E in FIG. 5 (the left side of the vertical surface E in FIG. 6), and the oil-water separation is located on the leftmost side. In the oil-water separation partition wall 22b adjacent to the partition wall 22a, the communication pipe 25 is located below the vertical surface E in FIG. 5 (on the right side of the vertical surface E in FIG. 6).

The communication pipes 25 provided in the adjacent oil-water separation partition 22 are arranged on different sides with respect to the vertical surface E passing through the axis in the flow direction of water or the like, and are indicated by the arrows in FIG. As the water etc. progresses, the residence time of the water etc. in each room becomes longer. Since it takes a long time from the inflow of water or the like to the outflow into the room of the oil-water separation unit 12, it is possible to gain time for the mixed water and the oils to separate, and the oil-water separation is further improved. It will be done reliably. That is, since the situation in which the water or the like that has flowed out from the room on the upstream side is left in the room on the downstream side for a long time is repeated, oils can be reliably captured.

In the present embodiment, the inflow partition wall 23 is arranged exactly between the water passage portion 11 and the oil-water separation portion 12, but the position of the inflow partition wall 23 is not limited to this. For example, it is possible to provide the inflow partition wall 23 at a position separated from the oil-water separation unit 12 by a predetermined distance.

Further, in the present embodiment, the oil-water separation function in the oil-water separation unit 12 can be achieved by having the communication pipe 25, but the configuration for achieving the oil-water separation function is not limited to the configuration having the communication pipe 25. For example, it is possible to achieve the oil-water separation function by providing a hole for passing the oil-water separation partition wall 22 at a predetermined height.

In the present embodiment, the configuration in which one oil-water separation portion 12 is provided in the water passage portion 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, a plurality of oil-water separation units 12 may be provided at predetermined intervals.

(Second Embodiment)
FIG. 7 shows a cross-sectional view from the front of the gutter equipment 10 according to the second embodiment of the present invention, and FIG. 8 shows a cross-sectional view seen from the side surface direction (upstream side). 8 (A) is a cross-sectional view on the VIII (A) plane of FIG. 7, and FIG. 8 (B) is a cross-sectional view on the VIII (B) plane of FIG. Regarding the gutter equipment 10 according to the present embodiment, only the differences from the gutter equipment 10 according to the first embodiment will be described, and the same parts will be omitted.

The oil-water separation partition wall 22 according to the present embodiment is provided with a water passage hole 26 together with a communication pipe 25. The water passage hole 26 has a horizontally long quadrangular shape with trimmed corners as shown in FIG. In the present embodiment, the lower limit of the water passage hole 26 is the same height as the bottom surface of the oil-water separation portion 12, and the upper limit of the water passage hole 26 is the water passage portion 11 located on the upstream side of the communication pipe 25. It is lower than the bottom of. In the present embodiment as well, as in the first embodiment, the “bottom surface of the oil-water separating portion 12” means the upper surface of the bottom slab concrete constructed under the second U-shaped gutter body 20 (see FIG. 8), and “passing through”. The “bottom surface of the water portion 11” means the upper surface of the bottom slab concrete constructed under the first U-shaped gutter body 20.

Since the oil-water separation partition wall 22 is provided with a water passage hole 26 having a predetermined form together with the communication pipe 25, dust or the like having a heavier specific gravity than water is deposited only in the room on the upstream side of the oil-water separation portion 12. Can be suppressed. As a result, it is possible to prevent the communication pipe 25 from being clogged.

The shape of the water passage hole 26 of the present embodiment is a quadrangle, but the shape is not particularly limited to this. For example, it is possible to make it circular in consideration of the ease of work at the time of manufacturing.

10 Gutter equipment 11 Water flow part 12 Oil-water separation part 20 1st U-type side groove body 21 2nd U-type gutter body 22 Oil-water separation partition 23 Inflow partition 24 Inflow orifice 25 Communication pipe 26 Water passage hole E Vertical surface

Claims (5)

A gutter facility composed of U-shaped gutters with a U-shaped cross section.
The gutter facility includes a water passage part and an oil-water separation part having a deeper groove than the water passage part.
The oil-water separation section has two or more rooms separated by an oil-water separation partition wall.
The gutter equipment is provided with an inflow partition wall that obstructs the flow from the water passage portion to the oil water separation portion and has an inflow orifice for water passage.
Gutter equipment characterized by this. The oil-water separation partition wall
A communication pipe is provided to allow water to pass from the room on the upstream side to the room on the downstream side while leaving oils in the room on the upstream side.
The gutter equipment according to claim 1. The lower end of the inflow port of the communication pipe is located below the middle between the height of the bottom surface of the water passage portion located on the upstream side of the communication pipe and the height of the bottom surface of the oil-water separation portion. ,
The gutter equipment according to claim 2. One communication pipe is provided in each of the oil-water separation partition walls, and the communication pipe is provided.
The communication pipes provided in the adjacent oil-water separation partition walls are arranged on different sides with respect to the vertical plane passing through the axis in the flow direction of water or the like.
The gutter equipment according to claim 2 or 3. The oil-water separation partition wall is provided with a water passage hole together with the communication pipe.
The lower limit of the water passage hole is the same height as the bottom surface of the oil-water separation portion.
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.
The gutter equipment according to any one of claims 2 to 4.

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