JPH08260556A - Drainage basin - Google Patents

Abstract

PURPOSE: To reduce the adhesion and deposition of dirt and suppress the closure of a drain conduit by setting the side inner periphery of a drain pipe connecting tubular body larger in diameter than the upper and lower inner peripheries, and setting the upper inner periphery larger in diameter than the lower inner periphery. CONSTITUTION: The diameter R2 of the side inner periphery of a drain pipe connecting tubular body 6 at the inlet of an auxiliary ditch 2 is set larger than the diameters R1, R3 of the upper and lower inner peripheries. The diameter R1 of the upper inner periphery is set larger than the diameter R3 of the lower inner periphery. An insertion port 61 having a circular cross section is fitted at the end section of the tubular body 6, a drain branch pipe is inserted into the insertion port 61 for connection, and the cross section of a conduit is changed from a circular shape to an oval shape at the connection section. The inflow resistance is generated, and the flow velocity of the sewage flowing in from the drain branch pipe is reduced by the inflow resistance of the connection section. The sewage is hardly bounced in a drainage basin A when it merges with a main ditch l through the auxiliary ditch 2 and flows into the drainage basin A, and the adhesion and deposition of dirt is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage basin used in the middle of a drainage pipe.

[0002]

2. Description of the Related Art A conventional drainage basin is, for example, Japanese Utility Model 4-26.
It is described and known in Japanese Patent Publication No. 549. As this conventional drainage basin, a linear main groove and a sub-groove that is obliquely merged with this main groove are formed in the bottom of the basin, and at the inlet and outlet of the main groove and the inlet of the sub-groove, respectively. A drain pipe connecting tubular body is formed so as to project outward from the side wall of the pit.
In this conventional drainage basin, drainage mains are connected to the drainage pipe connecting tubular bodies formed at the inlet and outlet of the main groove, respectively, and the drainage pipe connecting tubular body formed at the inlet of the auxiliary groove is drained. Used by connecting branch pipes.

[0003]

The conventional drainage basin described above is
Generally, the upper end opening diameter is as small as 300 to 450 mm, and more recently, smaller drainage basins are becoming more popular due to land conditions. However, in such a conventional drainage basin, when, for example, sewage falls from a high place such as the second floor, the sewage that has vigorously flowed in from the entrance of the main groove or the entrance of the sub-groove becomes the side wall of the main groove. There is a problem in that it hits against the water and repels to deposit dirt inside the drainage basin, which is deposited during use and the drainage basin is clogged, or a foul odor is generated.

Further, there is a problem that only the dirt contained in the waste water is left behind at the entrance of the main groove or the sub groove and gradually accumulates on the upstream side to block the drainage pipe. SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and to provide a drainage basin in which the amount of filth deposited and accumulated is small and the drainage conduit is not easily blocked by filth.

[0005]

The present invention has been made in order to achieve the above-mentioned object, and a main groove and a sub-groove united with the main groove are formed in the bottom of the basin and the main groove is formed. At least one of the inlet of the main groove or the inlet of the sub-groove is formed in the inlet and the outlet of the groove and the inlet of the sub-groove, in the drainage basin in which the tubular body for drain pipe connection protruding outward from the side wall of the groove is formed. One of the drain pipe connecting tubular bodies has a substantially egg shape in which the side inner peripheral surface radius is larger than the upper and lower inner peripheral surface radii and the upper inner peripheral surface radius is larger than the lower inner peripheral surface radius. It is a drainage basin characterized by having a cross section.

[0006]

In the drainage basin of the present invention, at least one of the inlet of the main groove and the inlet of the auxiliary groove has a tubular body for connecting a drainage pipe,
The lateral inner peripheral surface radius is larger than the upper and lower inner peripheral surface radii, and the upper inner peripheral surface radius is larger than the lower inner peripheral surface radius. In order to connect a drain pipe with a circular cross section to this roughly pipe-shaped drain pipe connecting body, attach an insertion port with a circular cross section to the end of the drain pipe connecting tubular body, and attach it to this insertion port. When a drainage pipe is inserted and connected, inflow resistance occurs because the cross section of the pipe line changes from a circular shape to an egg shape at this connection portion. Due to the inflow resistance of this connection,
The flow rate of the sewage flowing from the drainage pipe is reduced, and when the sewage flows into the main groove or the sub-groove, the sewage is less likely to be repelled in the drainage basin, and as a result, the adhered and accumulated filth can be reduced.

[0007] When sewage flows into the approximately pipe-shaped drain pipe connecting cylinder, the bottom of the cylinder is narrower than the upper part of the cylinder, so that the water level rises and the filth floats. However, it becomes easier to flow smoothly, the filth does not settle at the bottom of the flow path, and the drainage pipeline is less likely to be blocked by the filth.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. 1 and 2 show an embodiment of a drainage basin of the present invention, (a) of FIG. 1 is a plan view of the drainage basin, (b) is a partially cutaway side view, and (c) is a (a) view. Is an enlarged cross-sectional view taken along line X-X of FIG. FIG. 2 is a perspective view showing a usage state of the drainage basin of FIG.

An embodiment of the drainage basin A of the present invention will be described with reference to FIGS. 1 is a main groove, 2 is a sub-groove, 3 is a bottom of a basin,
4, 5 and 6 are cylindrical bodies for connecting drainage pipes, 7 is a side wall of a pipe, and 8 and 9
Is a drainage main pipe, and 10 is a drainage branch pipe. The drainage basin A is made of hard vinyl chloride resin, and the drainage basin A is provided with a straight main groove 1 and a sub-groove 2 obliquely joined to the main groove 1 at the bottom 3 of the drainage basin A. . At the inlet and outlet of the main groove 1 and at the inlet of the auxiliary groove 2, drain pipe connecting tubular bodies 4, 5 and 6 respectively projecting outward from the side wall 7 are formed. Insertions 41, 51, 61 are provided at the ends of the bodies 4, 5, 6, respectively.

Of the above-mentioned drain pipe connecting tubular bodies 4, 5, and 6,
The drain pipe connecting tubular bodies 4 and 5 formed at the inlet and outlet of the main groove 1 have a circular cross section as shown in FIG. As shown in FIG. 1C, the drain pipe connecting tubular body 6 has a substantially egg-shaped cross section, and an insertion opening 61 having a circular cross section is provided at an end thereof. The cross section of this substantially oval shape is such that the side inner peripheral surface radius R2 is larger than the upper inner peripheral surface radius R1 and the lower inner peripheral surface radius R3, and the upper inner peripheral surface radius R1 is larger than the lower inner peripheral surface radius R3. ing.

Next, the construction method and usage method of the drainage basin A will be described with reference to FIG. First, an adhesive is applied to one end of the drain main pipe 8 installed in the excavated soil, and the drain pipe inserting tubular body 4 formed at the inlet side of the main groove 1 of the drainage basin A.
An adhesive is applied to the insertion port 41 of the above, and the drain main 8 is inserted and fixed by adhesion. Similarly, the other main drainage pipe 9 is inserted into the insertion port 51 formed on the outlet side of the main groove 1 and fixed by adhesion.

Then, the drain branch pipe 10 is inserted into the insertion opening 61 formed on the inlet side of the sub groove 2, and is fixed by adhesion in the same manner as the drain main pipes 8 and 9. The drain branch pipe 10 is connected to a vertically installed drain branch pipe 12 connected to a high place such as the second floor of a building through an elbow 11. When the connection between the drainage main pipes 8 and 9 and the drainage branch pipe 10 is completed in this manner, finally, although not shown, a lid is attached to the upper opening of the drainage basin A, and soil is backfilled to complete the construction. . The drainage basin A constructed in this manner is installed at a place where the drainage mains 8 and 9 and the drainage branch pipe 10 are connected to intersect so that the drainage pipe can be regularly checked for clogging. Used.

In the drainage basin A of the present embodiment constructed as described above, the tubular body 6 for connecting the drainage pipe at the inlet of the auxiliary groove 2
Indicates that the side inner circumferential surface radius R2 is the upper and lower inner circumferential surface radius R
1 and R3, and the upper inner peripheral surface radius R1 is larger than the lower inner peripheral surface radius R3. When connecting the drain branch pipe 10 having a circular cross section to the substantially pipe-shaped drain pipe connecting tubular body 6, an insertion opening 61 having a circular cross section is attached to an end portion of the drain pipe connecting tubular body 6. Therefore, when the drain branch pipe 10 is inserted and connected to the insertion port 61, inflow resistance occurs because the cross section of the pipe line changes from a circular shape to an egg shape at this connection portion. Due to the inflow resistance of this connecting portion, the flow velocity of the dirty water flowing from the drain branch pipe 10 is reduced, and when it flows into the main groove 1 through the sub groove 2,
The sewage is less likely to be repelled in the drainage basin A, and as a result, it is possible to reduce the adhered and accumulated filth.

When sewage flows into the drain pipe connecting tubular body 6 having a substantially oval shape, the bottom of the tubular body 6 becomes narrower than the upper portion thereof, so that the water level rises and filth is generated. It becomes easy to flow smoothly while floating, and the dirt does not settle at the bottom of the flow path, and the drainage pipe is less likely to be blocked by the dirt.

[0015]

In the drainage basin of the present invention, at least one of the main groove inlet and the sub groove inlet has a substantially oval cross section, so that the flow velocity of the sewage flowing from the drainage pipe is high. Is reduced and sewage is less likely to bounce back in the drainage basin,
As a result, it is possible to reduce the amount of filth deposited and accumulated even when sewage flows in from the drainage pipe, and it is possible to solve the problems that a bad odor is generated and the drainage basin is clogged.

When sewage flows into the egg-shaped tubular body for connecting a drainage pipe, the water level rises and the sewage easily flows smoothly while floating, and the sewage does not settle at the bottom of the flow path. , Drainage pipes are less likely to be blocked by dirt,
You can use it with confidence.

As described above, the drainage basin of the present invention is less likely to be attached and accumulated with waste, and the drainage pipe is less likely to be blocked by the waste, so it is effective in reducing the size of the drainage basin, and the site area is reduced. Even if there are restrictions, the drainage pipe on the inflow side can be shortened and installed, which is convenient.

[Brief description of drawings]

FIG. 1 is an embodiment of a drainage basin of the present invention, in which (a) is a plan view of the drainage basin, (b) is a partially cutaway side view, and (c) is a XX line of (a). 2B is an enlarged cross-sectional view taken along line BB in FIG.

FIG. 2 is a perspective view showing a usage state of the drainage basin shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 main groove 2 sub-groove 3 cell bottom 4, 5, 6 drainage pipe connecting tubular body 7 cell side wall

Claims (1)

[Claims] 1. A main groove and a sub-groove united with the main groove are formed at a bottom of a basin, and are projected outward from a side wall of the basin at an inlet and an outlet of the main groove and an inlet of the sub-groove, respectively. In the drainage basin in which the drainage pipe connecting tubular body is formed, the drainage pipe connecting tubular body of at least one of the inlet of the main groove and the inlet of the auxiliary groove has A drainage basin having a substantially egg-shaped cross section with a radius larger than a lower inner peripheral surface radius and an upper inner peripheral surface radius larger than a lower inner peripheral surface radius.