JPH11210071A - Drainage basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage basin having a compact configuration to which a drain inflow pipe can be easily connected to a connecting hole at entry side of the drainage basin regardless of the direction of disposition. SOLUTION: A public drainage basin 11 constituting a drain pipeline embedded underground comprises a cylindrical catch basin main body 18 on which an cleaning hole 33 is attached at the top, an inlet side connecting hole 19 preinstalled in the main body 18 of the drainage basin for connecting to a drain inflow pipe 10, and an outlet side connecting hole 16 located below the inlet-side connecting hole 19 and installed to the drainage basin main body 18 to which a drain outflow pipe 12 is to be connected. In the drainage basin main body 18, a rotating means 20 capable of changing the direction of the inlet-side connecting hole 19 to any desired direction is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage basin connected to a drainage pipe buried underground, and more particularly to a public basin installed inside or outside a residential land.

[0002]

2. Description of the Related Art Wastewater such as gray water discharged from homes flows through a drainage introduction pipe buried underground in a residential area, merges at a drainage basin (sewage basin) installed at a junction, and then drains. The water flows through the main pipe, and is discharged to a public sewer main pipe outside the residential land via a public basin installed inside or outside the residential land and a drainage outflow pipe connected to this. A cleaning port is attached to the upper part of the drainage basin and the public basin, and the upper end of the cleaning port is closed by a lid. The drainage line composed of the drainage introduction pipe, drainage basin, drainage main pipe, public basin, drainage outflow pipe, public sewer main pipe, etc., does not increase the amount of drainage because so-called unknown water such as rainwater and groundwater enters. As a whole, it has a closed structure.

[0003] Usually, in sewerage works such as the so-called surface maintenance business conducted by local governments, a large-diameter public sewer main line serving as a drainage main line is first laid underground on a road or the like, and also in a residential land or a residential land. A public measure for the residential land is set up outside,
Connect the drainage pipe from the sewer main to the public basin. In order to make the drainage pipe a closed structure, the opening of the entrance side connection port of the public basin is closed with a sealing lid, and in this state, the drainage piping work in the residential land will be waited.

FIG. 9 is a plan view showing a conventional public square installed in advance in this way. As shown in the figure, the public basin 1 is installed in the residential land A ₁ , and the drainage outflow pipe 3 connected to the outlet side connection port 2 of the public basin 1 is connected to the public premises A ₁ outside the residential land to A ₂ outside the residential land. It is connected to a sewer main (not shown). The public basin 1 is provided with a plurality of (for example, three) inlet-side connection ports 4 to which a drainage inflow pipe (drainage main pipe) 6 for inflowing drainage can be connected. The inlet-side connection ports 4 are attached in different directions, respectively, and the openings thereof are closed by sealing lids 5 so that soil, water and the like do not enter the public basin 1. In the surface improvement project conducted by the local government, the public basin 1 is buried underground in the state shown in FIG.

[0005]

In the installation work of the drainage pipe in the residential land performed by the residents, the surroundings of the public basin 1 are dug up and exposed, and the drainage inflow pipe 6 is connected to the entrance side connection port 4. . In this case, the connection direction of the drainage inflow pipe 6 to the public basin 1 often differs for each residential land, depending on the shape and arrangement of the building in the residential land, the arrangement of water supply and gas pipes, and the like.

As described above, since it is not known from which direction the drainage inflow pipe 6 is connected to the public basin 1, usually, a plurality (for example,
(3) inlet-side connection ports 4 are provided in advance, and sealing lids 5 are attached to all of the inlet-side connection ports 4. Then, in the installation work of the drainage pipe in the residential land, only the lid 5 of the inlet side connection port 4 facing the direction of the drainage inflow pipe 6 is removed, and the drainage inflow pipe 6 is connected to this inlet side connection port 4. .

As described above, conventionally, since the plurality of entrance-side connection ports 4 are attached to the public box 1, the shape of the entire public box becomes large and complicated, and it is difficult and expensive to manufacture the mold. Had become. In addition, the inlet-side connection port 4 to which the drainage inflow pipe 6 is not connected and the sealing lid 5 have been wasteful and obstructive after the installation of the drainage pipe in the residential land. Moreover,
The direction of the drainage inflow pipe 6 is the inlet side connection port 4 to be used.
If they do not coincide with the central axis of
It was necessary to use a pipe joint such as an elbow at the connection part.

On the other hand, JP-A-5-33382 discloses that
A public square comprising a curved tube and an upright tube connected to the upper portion of the curved tube is disclosed. In this conventional technique, a hole is formed in an upright pipe at a construction site to form a connection part having a complicated structure, and the inlet side pipe is connected at this connection part. Therefore, the connection work is complicated and time-consuming, the workability is poor, the number of parts in the connection part is increased, the sealing performance of the connection part is not always sufficient, and drainage leakage to the outside and ingress of unknown water into the inside There was fear.

[0009] In the technique described in the above publication, tools are also inserted into the inside of the installed public pit and connection work of the inlet side piping is performed. Therefore, tools and parts for the work are placed inside the public pit. Particular care was required to prevent falling, and work had to be performed very carefully. This public basin is a diversion of the joint almost as it is, and has no leg part for installing the public basin underground, so it has the original function of a basin that can be installed stably underground. It is not stable when installed. Further, the bent tube and the upright tube can be disassembled, but they are shaky in a connected state, resulting in poor stability and insufficient sealing performance.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and can easily connect a drainage inflow pipe to an inlet-side connection port of a drainage basin, regardless of the arrangement direction of the drainage inflow pipe. It is an object of the present invention to provide a drainage basin having a compact configuration capable of performing the same.

[0011]

In order to achieve the above-mentioned object, a drainage basin according to the present invention is a drainage basin which forms a drainage pipe buried underground, and has a cylindrical shape in which a cleaning port is attached at an upper part. The basin body, and an inlet-side connection port provided in the basin body in advance for connecting the drainage inflow pipe, and a drainage outflow pipe connected to the basin body, which is located below the inlet-side connection port and provided in the basin body. Outlet side connection port to be provided,
Rotation means for changing the direction of the entrance-side connection port to a desired direction is provided.

The cell body is divided into an upper cell body having the inlet-side connection port and a lower cell body having the outlet-side connection port, and is connected to each other by the rotating means so as to be connected only in the circumferential direction. It is preferable to make it relatively rotatable with respect to.

It is preferable that at least one inlet-side connection port is provided integrally with the upper-side box body.

For example, the upper box body is divided into a plurality of units, and the respective inlet side connection ports are provided in each unit, and the units are connected to each other and rotated relatively only in the circumferential direction. May be provided, and the direction of each of the inlet-side connection ports may be changed to a desired direction by the other rotating means.

The seal portion between the connection tube at the upper end of the box body and the cleaning pipe of the cleaning port mounted on the connection tube, the seal portion of the rotating means, and the other rotating means. It is preferable that a plurality of grooves for holding and sealing the liquid material for sealing are provided in the seal portion, and seal members each having a plurality of grooves formed on an outer peripheral surface in a circumferential direction are interposed.

[0016] The drainage basin has a vertical axis with respect to a center axis of the basin body when the drainage basin is installed in the ground.
The outlet-side connection port connected to the drainage outflow pipe on the side of a public sewer main pipe faces one of a lateral direction and a downward direction, and the turning surface of the turning means is the center axis of the box body. It is preferable to provide a leg at the bottom of the main body of the pit, which is substantially perpendicular to the pit, and for installing the pit in the ground.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. (First Embodiment) FIG. 1 is a partial sectional view of a drainage pipe using a public basin according to a first embodiment, FIGS. 2 and 3 are front sectional views and plan views of the public basin, respectively, and FIGS. Is a view showing a part of the public square, and (A) and (B) of FIG.
3 is a partially enlarged sectional view showing a portion A and a portion B, respectively.

As shown in FIG. 1, wastewater discharged from a drainage source such as a sink or a bath in each household flows through a drainage introduction pipe connected to the drainage generation source, and drains at a junction point (drainage main pipe). Merge into 10. At this junction, a drainage basin is installed for each drainage source. The drainage that has flowed through the drainage inflow pipe 10 through the drainage basin is A ₁ (or A
Through the public basins 11, which is a type of the installed catch basins to _2), joins the public sewer main 13 of land outside A ₂ flows through the drainage outlet pipe 12.

The sewer main pipe 13 is deep underground burial roads of residential outside A _2, the inlet 15 is provided in the wall of the side above the sewer main pipe 13. The downstream side of the drainage outflow pipe 12 installed at an angle is connected to the inflow port 15, and the upstream side of the drainage outflow pipe 12 is connected to the exit side connection port 16 of the public basin 11. The public basin 11 is disposed obliquely above the sewer main pipe 13 in order to allow drainage to flow smoothly and naturally. The drainage pipe 14 buried underground is constituted by the drainage introduction pipe, the drainage basin, the drainage inflow pipe 10, the public basin 11, the drainage outflow pipe 12, the sewer main pipe 13, and the like. In sewer construction, first, buried established by connecting the sewer main pipe 13 at the surface maintenance business and the like described above to the waste water outlet pipe 12 and the public basins 11, then, when building a house or the like on land in A ₁ performs installation work of the drainage pipe 14 in land in a _1, connecting the drainage inlet pipe 10 and public basins 11 at that time.

Next, the public square 11 will be described. FIG.
As shown in FIG. 3, the public box 11 is made of a synthetic resin such as a hard vinyl chloride resin and is buried underground. The public basin 11 has a leg 17 for installing the public basin 11 in the ground and a cylindrical main body 18 to which a cleaning port 33 is attached at the upper part, and a basin for connecting the drainage inflow pipe 10. At least one inlet-side connection port 19 provided in the main body 18 in advance, and an outlet-side connection port 16 which is located below the inlet-side connection port 19 and is provided in the cell body 18 and to which the drainage outflow pipe 12 is connected. Have. A rotating means 20 capable of changing the direction of the entrance-side connection port 19 to a desired direction is provided on the basin body 18.
Is provided.

In the present embodiment, the box body 18 is integrally formed with an upper box body 21 having an inlet-side connection port 19,
It is divided into a lower side box main body 22 having an outlet side connection port 16 and integrally formed, and is connected to each other by turning means 20 so as to be relatively rotatable only in the circumferential direction. The box body 18 is molded by injection molding using a mold or the like. Masu body 1
8 and a connecting tube 23 projecting upward, a cleaning pipe 24
Are connected upward. A lid receiving frame 25 located on the ground G is attached to the upper end of the cleaning tube 24, and a lid 26 for closing the cleaning port 33 is detachably attached to the lid receiving frame 25. A cleaning port 33 for the public tub 11 is formed by the connecting tube 23, the cleaning tube 24, the lid receiving frame 25, and the lid 26.
Is configured.

The connecting tube 23 forms a part of the upper box body 21 and is integrally formed. The connection tube 23 is a socket-shaped receiving port whose diameter is enlarged, and the lower end of the cleaning tube 24 can be fitted into the connection tube 23. On the side of the upper box body 21, an inlet connection port 19 is provided.
3 and is integrally formed so as to protrude therefrom. Vertical direction (e.g., substantially perpendicular) transversely with respect to the central axis C ₁ of Masumoto body 18 facing the center axis C ₂ of the inlet-side connecting port 19 is substantially orthogonal when public basins 11 is installed in the ground (Ie, substantially horizontal). Inlet connection port 1
Reference numeral 9 denotes a socket-shaped receiving port, so that the drainage inflow pipe 10 can be fitted and connected. A curved surface portion 28 is provided on the inner peripheral portion of the root portion 27 of the inlet-side connection port 19.
9 and is formed over the entire circumference of the end portion 5 of the drainage inflow pipe 10.
5 is smoothly continued from the inner peripheral surface 29 to the curved surface portion 28. The lower side position of the curved surface portion 28 is located at the edge 3 of a convex curved surface projecting inward of the box body 18.
It is 0.

The lower box body 22 has an upstream side connected to the upper box body 21 and is formed integrally with a curved portion 32 for changing the flow direction of the drainage substantially at a right angle and downstream of the curved portion 32. And an outlet connection port 16 that can be connected to the drainage outflow pipe 12 on the sewer main pipe 13 side. The outlet side connection port 16 is a spigot, and is fitted and connected to an enlarged diameter portion 31 formed as a receiving port on the upstream side of the drainage outflow pipe 12.

The central axis C ₃ of the outlet side connection port 16 is oriented transversely to the central axis C ₁ of the box body 18 which is oriented vertically, for example, perpendicular to the central axis C ₁ or drained. Is inclined slightly downward to make it easier to flow. At the bottom of the curved portion 32, the leg portions 17 projecting downward substantially parallel to the central axis C ₁ of Masumoto body 18 is formed integrally. Since the legs 17 are provided, the public basin 11 can be installed in a stable state.

The rotating means 20 has a generally annular shape so that the lower end of the upper cell body 21 and the upper end of the lower cell body 22 are relatively rotatably connected only in the circumferential direction. No. The turning surface D of the turning means 20 is substantially orthogonal to the central axis C ₁ of the box body 18. Therefore, when the center axis C ₁ is oriented vertically, the inlet side connection port 19
Turns 360 degrees around the central axis C ₁ as shown by the arrow E, and can change its direction to a desired direction in a horizontal plane.

As shown in FIG. 1, FIG. 2 and FIG.
The rotating means 20 is formed on the inlet side, that is, the upper end, of the lower box main body 22 and is formed on the non-rotating side cylindrical portion 40 concentric with the central axis C _1, and on the drain outlet side, that is, the lower end of the upper box main body 21. And concentric with the center axis C ₁ ,
The cylindrical member 41 includes a rotating cylindrical portion 41 rotatably engaged with the cylindrical member 0 and a sealing member 43 interposed in a sealing portion 42 between the cylindrical portions 40 and 41.

The non-rotating side cylindrical portion 40 includes a sealing member 43.
An annular concave portion 44 for accommodating is formed.
The sealing member 43 has a substantially V-shaped cross section (including a U-shaped cross section).
Grease 52 as a liquid material for sealing.
A plurality of grooves 45 for holding and sealing are formed on the outer peripheral surface in the circumferential direction. The plurality of grooves 45 are formed by forming the outer peripheral surface of the seal member 43 into a saw-toothed or corrugated cross-sectional shape. The seal member 43 is formed of rubber or synthetic resin having a high elasticity, and is in close contact with both the non-rotating cylindrical portion 40 and the rotating cylindrical portion 41. Thereby, the gap between the non-rotating side cylindrical portion 40 and the rotating side cylindrical portion 41 is sealed by the sealing member 43, and the sealing state is further improved by the grease 52 held in the groove 45.

The non-rotating side cylindrical portion 40 is formed with a concave portion 46 and a convex portion 47 continuous with the concave portion 46 in an annular shape. A convex portion 48 and a concave portion 49 continuous with the convex portion 48 are formed in a circular shape on the rotation side cylindrical portion 41, and the convex portion 48 and the concave portion 49 are engaged with the concave portion 46 and the convex portion 47 respectively. I have. As a result, the rotation-side cylindrical portion 41 is free to move in the direction of the central axis C _{1 while} being restricted by the non-rotation-side cylindrical portion 40, and freely rotates 360 degrees around the central axis C ₁ as shown by the arrow E. Can rotate.

As shown in FIG. 1, FIG. 2 and FIG.
A concave portion 51 is formed on the inner peripheral surface near the upper end of the connection cylinder 23 of the basin body 18, and a seal member 43 having the same configuration as the above-described seal member 43 is housed in the concave portion 51. The sealing member 43 is connected to the connecting cylinder 23 and the connecting cylinder 23.
It is interposed in the seal part 50 between the cleaning pipe 24 of the cleaning port 33 and the cleaning port 33 attached to the cleaning port 33. That is, the sealing member 43 is
Since the grease 52 is held by the groove 45 of the seal member 43 while the inner peripheral surface of the concave portion 51 and the outer peripheral surface of the cleaning tube 24 are elastically adhered, the seal portion 50 is sealed well.

In a sewerage work such as a face maintenance business, a cleaning port 33 is attached to the public basin 11 having the above-described structure, and
Of the drainage pipe 14 from the drainage pipe 12 to the public basin 11 through the drainage pipe 12. Since the leg 17 is provided in the public box 11, the public box 11 can be installed in a stable state. The opening of the inlet-side connection port 19 is closed by a sealing lid 53 so that soil, water, etc. do not enter the public tub 11.
Is buried underground.

[0031] Then, in the sewer construction work at the time of such as building a house is built in residential land within the A _1, drainage pipe 1 of residential land in the A ₁
Four drainage inflow pipes 10 are connected to the public basin 11. In this case, the area around the public basin 11 and the cleaning port 33 is dug up to expose at least the entrance-side connection port 19 of the upper-side main body 21 of the public basin 11. Then, the sealing lid 53 is removed to open the entrance side connection port 19, and the entrance side connection port 1 is opened.
The upper side box body 21 is rotated as shown by an arrow E so that 9 faces the direction of the drainage inflow pipe 10.

In this case, the rotating means 2 is connected to the lower casing body 22 which is connected to the drainage outflow pipe 12 and does not rotate.
Since the upper box body 21 is freely rotatable through 360 degrees via 0, the inlet connection port 19 turns and is positioned in a desired direction. When the cleaning port 33 is entirely exposed,
The cleaning port 33 also rotates integrally with the upper box body 21. In addition, when the cleaning tube 24 does not rotate in a state in which all or a part of the cleaning port 33 is buried, the connection tube 23 is relatively rotatable with respect to the non-rotating cleaning tube 24. Therefore, only the upper side box body 21 can be rotated. In this case, the connection pipe 23 and the cleaning pipe 24
Also constitutes a part of the rotating means 20 capable of changing the direction of the entrance-side connection port 19 to a desired direction.

By orienting the inlet-side connection port 19 in a desired direction, the central axis C ₂ of the inlet-side connection port 19 and the center axis of the drainage inflow pipe 10 coincide with each other with high accuracy. It can be easily fitted and connected to the inlet side connection port 19. Drainage inflow pipe 1 for public basin 11
At the time of the connection work of “0”, there is no need to perform a cutting work or a work of attaching parts, and the connection can be made easily and in a short time with almost one touch.

[0034] Thus, after the work of the drainage inlet pipe 10 is fitted and fixed to the inlet-side connecting port 19 to connect the drain line 14 of the land in the A ₁ public basins 11 is completed, the waste water by backfilling the soil The conduit 14 is buried underground. In the drainage pipe 14, drainage discharged from a sink in a house, etc.
Under natural flow, the water flows through the drainage introduction pipe, the drainage basin at the junction, and the drainage inflow pipe 10, passes through the public basin 11, and flows from the drainage outflow pipe 12 into the sewer main pipe 13.

When the drain pipe 14 is to be cleaned, a flexible cleaning tool (not shown) is directed downward from the upper opening of the cleaning pipe 24 with the lid 26 above the cleaning port 33 removed. ), The inside of the public basin 11 and the drainage outflow pipe 1
2 can be cleaned. When the drainage inflow pipe 10 is to be cleaned, the cleaning tool is inserted downward into the cleaning pipe 24 as described above.
9 is inserted into the drainage inflow pipe 10 in a bent state while being in contact with an edge portion 30 formed at the lower portion of the inner peripheral surface of the root 27 of the base 9, so that the drainage inflow pipe 10 and the drainage upstream therefrom are inserted. The conduit can be easily cleaned. In this case, at the distal end 55 of the drainage inflow pipe 10, the inner peripheral surface 29 of the drainage inflow pipe 10 and the edge 30 are smoothly connected without any level difference.
The cleaning tool is easily inserted into the inside of the drainage inflow pipe 10 from the edge portion 30 without being caught by the tip end portion 55 of the drainage inflow pipe 10.

By applying an adhesive or the like to each connection portion by fitting or the like as needed, it is possible to connect more securely in a sealed state. Although a plurality of entrance-side connection ports 4 are required in the conventional public basin 1 shown in FIG. 9, in this embodiment, one entrance-side connection port 19 may be prepared, Is compact and simplified.

(Second Embodiment) FIGS. 5 and 6 are a front sectional view and a plan view, respectively, of a public square according to a second embodiment. In each embodiment described below,
The same or corresponding parts as those of the other embodiments are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described.

The public square 11a shown in FIGS. 5 and 6 is used when connecting a plurality (for example, two) of drainage inflow pipes 10. For this purpose, a plurality of (for example, two) entrance-side connection ports 1 are provided in the upper-side main body 21a of the public tub 11a.
9 are provided integrally. In the present embodiment, a case is shown where two inlet-side connection ports 19 are provided at the same height in the upper-side box main body 21a and separated from each other by approximately 90 degrees. The box body 18a includes an upper box body 21a and a lower box body 22.
And a rotating means 20 capable of changing the direction of the inlet-side connection port 19 to a desired direction is provided in the box body 18a. The plurality of inlet-side connection ports 19 may be three or more, and the height positions may be different from each other.

(Third Embodiment) FIG. 7 is a front sectional view of a public square 11b according to a third embodiment. This embodiment is a modified example in which a plurality of inlet-side connection ports 19 are provided in the upper-side main body. In the public box 11b shown in FIG. 7, the box body 18b is provided with a rotating means 20 capable of changing the direction of the inlet connection port 19 to a desired direction. Then, the upper box body 21b is divided into a plurality (for example, two) of the units 60 and 6.
In addition, the upper unit 60 and the lower unit 61 are provided with the inlet connection ports 19, respectively.

Further, another rotating means 62 which is a rotating means for connecting the units 60 and 61 to each other and rotating relatively freely only in the circumferential direction is provided, and the rotating means 20 and another rotating means are provided. With 62, the direction of each inlet-side connection port 19 can be changed to a desired direction. Another rotating means 62 has substantially the same configuration as the rotating means 20. That is, the non-rotational side cylindrical portion 40 corresponds to the upper cylindrical portion 63 of the lower unit 61, and the rotation side cylindrical portion 4
1 is a cylindrical portion 6 formed below the upper unit 60.
It corresponds to 4. Another rotating means 62 has an overall annular shape so that the lower end of the upper unit 60 and the upper end of the lower unit 61 are relatively rotatably connected only in the circumferential direction. ing.

The rotating surface D ₁ of the rotating surface D and another rotating means 62 of the rotation means 20 are substantially perpendicular respectively to the center axis C ₁ of Masumoto body 18b. Therefore, if the center axis C ₁ is oriented vertically, the two inlet-side connection ports 1
9 pivots the direction to the center axis line C ₁ about to change in a desired direction in a horizontal plane. As described above, since the upper unit 60 and the lower unit 61 can independently change the direction of the inlet-side connection port 19 to a desired direction independently, the two drainage inflow pipes 10 can be changed from the same or different directions. Even if it is arranged with respect to the drainage basin 11b, the upper and lower inlet side connection ports 19 are respectively positioned in desired directions,
The drainage inflow pipe 10 can be suitably connected to the inlet-side connection port 19.

(Fourth Embodiment) FIG. 8 is a front sectional view of a public square 11c according to a fourth embodiment. The public square 11c shown in FIG. 8 is a drainage square called a "drop square", and the public square 11c is an outlet-side connection port connected to the drainage outflow pipe 12c on the side of the sewer main pipe 13 (FIG. 1). The direction of 16c is different.

[0043] That is, with respect to the central axis C ₁ of Masumoto body 18c facing the longitudinal direction when the public basins 11c is installed in the ground,
The outlet side connection port 16c faces downward (vertically).
The turning surface D of the turning means 20 is the center axis C of the box body 18c.
It is almost orthogonal to ₁ . The box body 18c is divided into an upper box body 21 and a lower box body 22c having an outlet-side connection port 16c serving as a spout. The upper box body 21 and the lower box body 22c are They are connected to each other by a rotating means 20 and are relatively rotatable only in the circumferential direction. In addition, it is preferable that the leg for installing the public basin 11c in the ground is provided in the lower part of the basin body 18c also in this public basin 11c.

According to the public boxes 11, 11a, 11b, and 11c shown in the first to fourth embodiments, the entrance side connection port of the public box is provided regardless of the direction in which the drainage inflow pipe 10 is arranged. 19 to the desired direction,
Can be easily connected to the inlet-side connection port 19. According to the present invention, the drainage inflow pipe can be easily connected to the public tub by freely rotating the upper tub main body without cutting or attaching parts at the construction site. Good workability. In addition, since the connection part of the drainage inflow pipe is fitted and connected, the connection part has a simple configuration with a small number of parts, has good sealing performance, and prevents leakage of drainage to the outside and entry of unknown water into the inside. There is no fear. Since the rotating means 20 and 62 are restricted so as not to move in the axial direction, the rigidity can be increased by firmly connecting the cell bodies.

Since the necessary number of inlet-side connection ports is provided without providing an extra number, the size of the public square can be reduced as a whole, and preparation is made to close the inlet-side connection port 19. The number of sealing lids can be reduced, and the mold for manufacturing public squares can be simplified. Since the work of connecting the inlet side pipe can be performed without inserting a tool into the inside of the installed public basin, the tool does not fall into the inside of the public basin.

By combining the structures of the public squares shown in the first to fourth embodiments, it is possible to obtain a variety of public squares. In addition, although the case where the inlet side connection port 19 is a receiving port is shown, it may be a port, and the case where the outlet side connecting ports 16 and 16c are a port, but may be a receiving port. In each of the above embodiments, the case where the drainage basin is a public basin is shown, but a drainage basin used in another place may be used as long as the basin is for drainage. The same reference numerals in the drawings indicate the same or corresponding parts.

[0047]

According to the present invention, as described above, the drainage inflow pipe can be easily connected to the inlet side connection port of the drainage basin regardless of the arrangement direction of the drainage inflow pipe. Therefore, the entire drainage basin can be made compact.

[Brief description of the drawings]

FIG. 1 to FIG. 8 are views showing an example of an embodiment of the present invention, and FIG. 1 is a partial sectional view of a drainage pipe using a public basin according to the first embodiment.

FIG. 2 is a front sectional view of the public measure shown in FIG. 1;

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a view showing a part of the public square, and FIG.
FIG. 3B is a partially enlarged cross-sectional view showing each of a portion A and a portion B in FIG. 2.

FIG. 5 is a front sectional view of a public square according to a second embodiment.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is a front sectional view of a public measure according to a third embodiment.

FIG. 8 is a front sectional view of a public square according to a fourth embodiment.

FIG. 9 is a plan view showing a conventional public square.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Drainage inflow pipe 11, 11a, 11b, 11c Public basin (drainage basin) 12, 12c Drainage outflow pipe 13 Public sewer main pipe 14 Drainage pipeline 16, 16c Outlet connection port 17 Leg 18, 18a, 18b, 18c Box body 19 Inlet connection port 20 Rotating means 21, 21a, 21b Upper box body 22, 22c Lower box body 23 Connection tube 24 Cleaning pipe 33 Cleaning port 42, 50 Seal part 43 Seal member 45 Groove 52 Grease (liquid Body) 60, 61 Unit 62 Separate turning means (turning means) C ₁ Center axis of box body D, D ₁ Turning surface

Claims (6)

[Claims] 1. A drainage basin forming a drainage pipe buried in the ground, comprising a tubular basin body to which a cleaning port is attached at an upper part, and a basin body previously provided for connecting a drainage inflow pipe. An inlet-side connecting port, and an outlet-side connecting port located below the inlet-side connecting port and connected to a drainage outflow pipe provided in the box body; A drainage basin provided with a rotating means capable of changing the direction of the drainage to a desired direction. 2. The cell body is divided into an upper cell body having the inlet-side connection port and a lower cell body having the outlet-side connection port, and is connected to each other by the rotating means to form a periphery. The drainage basin according to claim 1, wherein the drainage basin is relatively rotatable only in the direction. 3. The drainage basin according to claim 1, wherein at least one of the inlet-side connection ports is provided integrally with the upper side basin body. 4. The method according to claim 1, further comprising dividing the upper box body into a plurality of units, providing each of the units with the inlet-side connection ports, connecting the units and relatively freely rotating only in the circumferential direction. 4. The drainage basin according to claim 3, wherein a direction of each of the inlet-side connection ports can be changed to a desired direction by the other rotation means. 5. 5. A seal portion between a connection tube at an upper end of the box main body and a cleaning pipe of the cleaning port mounted on the connection tube, a seal portion of the rotating means, and a seal member of the another rotating means. 5. A seal member in which a plurality of grooves for holding and sealing a liquid material for sealing are formed in an outer peripheral surface in a circumferential direction in the seal portion, respectively. The drainage basin according to any of the above items. 6. The drainage basin is connected to the drainage outflow pipe on the side of a public sewer main with respect to the central axis of the basin body which is oriented vertically when the drainage basin is installed in the ground. The outlet-side connection port is oriented in one of the horizontal direction and the downward direction, and the turning surface of the turning means is a public tub substantially orthogonal to the central axis of the tub body. The drainage basin according to any one of claims 1 to 5, wherein a leg for installation in the ground is provided at a lower part of the basin body.