JPH0421919Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a drainage basin used in the middle of a lower drainage pipe.

(Prior Art) As a conventional drainage basin, for example, the one shown in FIG. 4 is known.

In this conventional drainage basin, a main stream inlet 1, a sub-inlet 2, and an outlet 3 are formed on the circumferential wall of the basin so as to protrude outward, and the basin bottom 4 has one end communicating with the main stream inlet 1. and the other end is the outlet 3
A main groove 5 communicates with the main groove 5, and a sub groove 6 whose one end communicates with the sub inlet 2 and whose other end communicates with the main groove 5 is formed, and the central axis of the main stream inlet 1 and the outlet 3 are provided coaxially, the main groove 5 is provided straight along the direction of these center axes, and the sub groove 6 is provided diagonally with respect to the main groove 5. Ta.

(Problems to be solved by the invention) However, in such a conventional drainage basin, when the wastewater that has flowed from the sub-inlet 2 into the sub-groove 6 flows from the sub-groove 6 into the main groove 5, The flow collides with the side wall 7 of the main groove 5 and is divided into the main stream inlet side and the outlet side, and a part of the stream flows backward at the main stream inlet 1. As a result, there were problems in that foul odors were generated due to stagnation of backflowing wastewater, or the flow path was completely blocked.

(Means for solving the problem) The present invention was made with the purpose of solving the above-mentioned problems.In order to achieve this purpose, the present invention has a main stream inlet on the circumferential wall of the box. A sub-inlet and an outlet are formed in a cylindrical shape and protrude outward, and the bottom of the basin has a main groove which communicates with the main stream inlet at one end and communicates with the outlet at the other end, and a main groove at one end. communicates with the sub-inlet, and a sub-groove whose other end communicates with the main groove is formed, the central axis of the main stream inlet and the central axis of the outlet are provided in the same direction, and the main groove are provided along these central axis directions, and in a drainage basin in which the sub-groove is provided diagonally with respect to the main groove, among the side walls of the main groove,
A guide portion is formed in the vicinity of the intersection of the sub-groove with the flow direction extension line, the guide portion being displaced from the flow direction of the sub-groove to the flow direction of the main groove toward the outlet side.

(Function) Therefore, in the drainage basin of the present invention, when wastewater flows into the main groove from the main stream inlet, the wastewater flows straight out from the outlet.

Next, when sewage flows into the sub-ditch from the sub-inlet, it flows into the main gutter through the sub-ditch.
Since the wastewater flows into the extension line of the sub-groove in the flow direction, if the flow rate is large, part of the wastewater collides with the side walls of the main groove. On the side wall of the main groove, a guide part is formed near the intersection with the flow direction extension line of the sub groove, and is displaced from the flow direction of the sub groove to the flow direction of the main groove toward the outlet side. Most of the sewage that is guided by this guide part and hits the side wall of the main groove moves to the outlet side and flows out from the outlet.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the configuration of the first embodiment shown in FIGS. 1 and 2 will be explained.

The drainage basin A of the first embodiment is buried underground and connected to a sewer pipe (not shown) via a connecting pipe B, as shown in Fig. 2, and is made of synthetic resin such as low-foam polypropylene. The material is integrally formed by injection molding. This drainage basin A has a basin surrounding wall 10
, the main inlet 11, the sub-inlet 12 and the outlet 13.
The basin bottom 20 has a main groove 2 whose one end communicates with the main stream inlet 11 and whose other end communicates with the outlet 13.
1, and a sub-groove 22 whose one end communicates with the sub-inflow port 12 and whose other end communicates with the main groove 21 are formed.

That is, in this drainage basin A, the center axis of the main stream inlet 11 and the center axis m of the outlet 13 are provided in the same direction, and the center axis n of the sub-inlet 12 is located in the same direction as the center axis m of the main stream inlet 11. This is a YT type drainage basin installed in a direction orthogonal to the central axis of the outlet port 13 and the central axis m of the outlet 13.

Note that, as shown in FIG. 1, right and left are defined when the drainage basin A is viewed from the plane with the outlet 13 facing down, and the details will be explained below based on this.

The main groove 21 is provided at a position moved to the left from the center of the bottom part 20, and the sub-groove 22 is provided on the right side of the main groove 2 position.

The sub groove 22 is formed in a curved manner, and the sub groove 22
is provided so as to join the main groove 21 from diagonally above and to the right.

On the left side wall 21a of the main groove 21, a side wall 22a on the main stream inlet side of the sub-groove 22 is placed at an intersection with an extension line extending in the flow direction of the sub-groove 22 toward the outlet 13 side in the flow direction of the sub-groove 22. A guide portion 211 is formed which is displaced from the main groove 21 in the flow direction.

Moreover, the main stream inlet 1 sandwiching the guide portion 211 is
The outlet side side wall 22b of the sub groove 22 is extended in the flow direction so that the width of the main groove 21 is the same on the side 1 and the outlet 13 side, and the right side wall 21b of the main groove is
A step is provided between the main stream inlet 11 side and the outlet 13 side with the sub-groove 22 in between.

That is, the main stream inlet 11 and the outlet 13 are formed to have the same diameter, and the center axis of the main stream inlet 11 is eccentrically provided to the left of the center axis m of the outlet 13.

Next, the operation of the first embodiment will be explained.

First, when wastewater flows into the main groove 21 from the main stream inlet 11, the wastewater flows straight into the outlet 1.
It is leaked from 3.

Next, when the sewage flows into the sub groove 22 from the sub inlet 12, the sewage passes through the sub groove 22 and enters the main groove 22.
However, since it flows on the extension line of the sub-groove 22 in the flow direction, if the flow rate is large, a part of the sewage collides with the left side wall 21a of the main groove 21. Main groove 2
1, a guide portion 211 is formed at the intersection of the main stream inlet side wall 22a of the sub-groove 22 with an extension line extending in the flow direction of the sub-groove 22. Most of the sewage that was guided and hit the left side wall 21a of the main groove 21,
The flow is transferred to the outflow port 13 side and flows out from the outflow port 13.

Therefore, in the drainage basin A of this embodiment, the sewage flowing into the main groove 21 from the sub groove 22 collides with the left side wall 21a of the main groove 21, flows toward the main stream inlet 11 side, and then flows backward. can be prevented. Since backflow of sewage can be prevented in this way, sewage stagnation in the drainage basin A or the sewage pipe is eliminated, the generation of bad odors due to sewage can be prevented, and it is also possible to reduce the number of times of cleaning.

Next, a second embodiment shown in FIG. 3 will be described.

In describing the second embodiment, the same components as those in the first embodiment are given the same reference numerals, and the explanation thereof will be omitted. Further, regarding the operations, explanations of operations similar to those of the first embodiment will be omitted.

In this embodiment, the central axis o of the sub-inlet 14 is the same as the central axis m of the main stream inlet 11 and the central axis m of the outlet 13.
This is a Y-type drainage basin C installed at an inclination angle of approximately 45° with respect to the sub-groove 23.
It is formed straight along the central axis o.

Further, the right side wall 21b of the main groove 21 is formed to have a straight surface with no step on both sides of the sub groove 23, and the right side wall 21a on the opposite side faces it.
As in the first embodiment, a guide portion 2 is provided at the intersection with the extension line of the main stream inlet side wall 23a of the sub-groove 23.
11 is formed, and the outlet 12 is formed to have a larger diameter than the main stream inlet 11.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and any design changes or the like that do not depart from the gist of the present invention are included in the present invention. It can be done.

For example, in the example, when viewed with the outlet facing down, the application was applied to a right-type basin in which the sub-groove is placed on the right side of the main groove, but a left-hand type in which the sub-groove is placed on the left side of the main groove. It may be applied to the squares.

In addition, in the embodiment, the guide part was provided at the intersection of the side wall of the main groove with the extension line of the main stream inlet side wall of the sub groove extended in the flow direction of the sub groove, but the guide part is provided slightly up and down from this position. They may be provided offset in the direction.
In addition, for the purpose of guiding the wastewater flowing into the main groove from the sub-groove to the outlet side without letting it escape by the guide part, it is optimal to provide it at the position shown in the embodiment.

(Effects of the invention) As explained above, in the drainage basin of the invention, since the guide portion is formed in the main groove, it is possible to prevent the backflow of sewage flowing from the sub-groove into the main groove. Therefore, no odor is generated or the flow path is blocked.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a drainage basin according to the first embodiment of the present invention;
FIG. 2 is a perspective view showing the connected state of the drainage basin of the first embodiment, FIG. 3 is a plan view of the drainage basin of the second embodiment, and FIG. 4 is a plan view of a conventional drainage basin. A... drainage basin, 10... basin surrounding wall, 11... main stream inlet, 12... sub-inlet, 13... outlet, 20
...Bottom part, 21...Main groove, 22...Minor groove, 21
1...Guide part...Central axis of main stream inlet, m
...The central axis of the outlet.

Claims (1)

[Scope of utility model registration request] A main stream inlet, a sub-inlet, and an outlet are formed in a cylindrical shape and protrude outward on the circumferential wall of the basin, and at the bottom of the basin, one end communicates with the main stream inlet and the other end communicates with the outlet. A communicating main groove and a sub-groove are formed, one end of which communicates with the sub-inflow port, and the other end of which communicates with the main groove, and the central axis of the main stream inlet and the central axis of the outflow port are aligned. In a drainage basin in which the main groove is provided along the central axis direction, and the sub-groove is provided diagonally with respect to the main groove, among the side walls of the main groove, the main groove is provided in the flow direction of the sub-groove. A drainage basin characterized in that a guide portion is formed in the vicinity of the intersection with the extension line, the guide portion being displaced from the flow direction of the auxiliary groove to the flow direction of the main groove toward the outlet side.