JP2545071Y2 - Drainage basin - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a drainage basin used for manholes and the like, which has a structure in which an inverting member composed of either urethane foam or styrofoam is arranged on the bottom of the basin main body, thereby reducing the weight. Thus, it is possible to provide a drainage basin in which an invert shape can be easily selected.

[0002]

FIG. 3 is a plan sectional view of a conventional drainage basin, and FIG.
FIG. 4 is a front sectional view taken on line A1-A1 of FIG. In the figure, reference numeral 1 denotes a box body made of concrete and has a bottomed cylindrical shape having a bottom 2. On the outer wall 3 of the basin main body 1, an inflow pipe connecting portion 4 communicating with the inside and outside of the basin main body 1 is formed. On the inner bottom surface 5 of the bottom 2, there is provided a flow channel 6 formed of a concave groove connected to the inflow pipe connection portion 4, and this flow channel 6 is formed on the outer wall 3 of the cell body 1.
Is connected to the discharge pipe connection part 7 provided in the above. Therefore, from the inflow pipe 8 connected to the inflow pipe connection part 4 from the outside, the box body 1
The sewage flowing into the tank passes through the flow path 6 and is discharged from the discharge pipe connection portion 7 to the outside of the tub body 1.

[0003]

However, the above-mentioned conventional drainage basin has the following problems. (A) Since the entire basin body 1 including the flow path 6 is made of concrete, it becomes extremely heavy and requires a great deal of labor for laying work. In a large drainage basin such as a drainage basin that constitutes a manhole bottom block, the weight is 250K.
g, and the installation work becomes extremely difficult. (B) Since the entire main body 1 including the flow path 6 is a concrete molded body, the flow path 6 cannot be changed after molding. For this reason, there is a problem in manufacturing that various types of drainage basins and molding dies must be prepared according to the flow path shape. (C) If the flow path is changed during the laying, the laying must be redone.

It is an object of the present invention to solve the above-mentioned conventional problems and to provide a light-weight drainage basin whose invert shape can be easily changed.

[0005]

In order to solve the above-mentioned problems, the present invention has a bottomed box main body having a pipe connection portion on an outer wall, and a flow passage connected to the pipe connection portion on the surface side. A drainage basin including an inverting member disposed on the bottom of the main body, wherein the inverting member is made of either urethane foam or styrene foam.

[0006]

The operation is divided into a bottomed box body having a pipe connection on the outer wall and an inverting member arranged on the bottom of the box body having a flow path connected to the pipe connection on the surface side. And the invert member can be handled separately. For this reason, the weight burden at the time of manufacturing and installation work is reduced.

In addition, since the inverting member is made of either urethane foam or styrofoam, it is extremely lightweight. The weight can be reduced to 1/3 or less of the conventional weight. For this reason, the weight burden at the time of manufacturing and installation work is further reduced.

The inverter member made of the above-mentioned material can easily form a flow path by using a suitable cutter. This makes it very easy to change the flow path.

[0009] The inverting member covers the surface provided with the flow path and the connection portion with the box body with a protective layer made of emulsion rubber . In this way, the invert member can be fixed to the box body, and the water resistance and weather resistance are improved.

[0010]

1 is a plan sectional view of a drainage basin according to the present invention, and FIG. 2 is a sectional view taken along line A2-A2 in FIG. In the figure,
9 is a box body made of concrete or the like, and 10 is an inverting member. The box body 9 has a bottomed cylindrical shape having a bottom portion 91 and a cylindrical outer wall 92 rising from the outer peripheral portion of the bottom portion 91, and the outer wall 92 is formed with a pipe connection portion 93 communicating with the inside and outside of the box body 9.

The inverting member 10 has a flow path 10 on its front side.
1 and 102, and the flow paths 101 and 102
Are arranged on the bottom of the box body so as to communicate with each of the pipe connecting portions 93. In the embodiment, the number of the pipe connection portions 93 is three, but the number is arbitrary, and the flow paths 101, 102
Can also be arbitrarily determined.

As described above, the bottom 91 of the box body 9 having the bottom is provided.
Since the inverting member 10 is arranged on the upper side, the cell body 9 and the inverting member 10 can be handled separately. For this reason, the weight burden at the time of manufacturing and installation work is reduced.

The invert member 10 is made of either urethane foam or styrene foam. For this reason, the total weight is reduced to 1/3 or less of the conventional weight, and the weight burden during the manufacturing and installation work is further reduced.

In the inverter member 10 made of urethane foam or polystyrene foam, the flow paths 101 and 102 can be easily formed by using an appropriate cutter. This makes it very easy to change the flow path.

The inverting member 10 includes flow paths 101, 10
The surface provided with 2 and the connection with the box body 9 are formed of a protective layer 10.
3 covered. This protective layer 103 is an emulsion
It is made of rubber . The protective layer 103 fixes the invert member 10 to the box body 9 and improves the water resistance and weather resistance of the invert member 10.

[0016]

As described above, according to the present invention, the following effects can be obtained. (A) Since it includes a bottomed box body provided with a pipe connection portion on the outer wall and an inverting member having a flow path connected to the tube connection portion on the surface side and disposed on the bottom of the box body, the box body and the inverting member are provided. It is possible to provide a drainage basin that treats the members separately and reduces the weight burden during manufacturing and installation work. (B) Since the inverting member is made of either urethane foam or styrofoam, it is possible to provide a drainage basin that is reduced in weight to 1/3 or less of the conventional weight and further reduces the weight burden during manufacturing and installation work. . (C) By using a suitable cutter, the flow path can be easily formed, and a drainage basin in which the flow path can be easily changed can be provided.

[Brief description of the drawings]

FIG. 1 is a plan sectional view of a drainage basin according to the present invention.

FIG. 2 is a sectional view taken along line A2-A2 in FIG.

FIG. 3 is a plan sectional view of a conventional drainage basin.

FIG. 4 is a sectional view taken along line A1-A1 in FIG.

[Explanation of symbols]

 9 Masu main body 10 Invert member 91 Bottom part 92 Outer wall 101, 102 Channel 103 Protection layer

Claims (1)

(57) [Scope of request for utility model registration] 1. A drainage basin comprising a bottomed box body provided with a pipe connection portion on an outer wall, and an inverting member having a flow path connected to the pipe connection portion on the surface side and disposed on a bottom portion of the box body. The inverting member is formed of any one of urethane foam and styrofoam, and is provided with the flow path.
The connection between the surface and the box body is made of emulsion
Drainage basin covered with a protective layer of rubber.