JPH08170364A - Drainage basin - Google Patents

Abstract

PURPOSE: To reduce a manufacturing cost and to prevent the inconveniences of drain pipes in their connection. CONSTITUTION: A manhole pipe socket 15 is formed on the upper surface of a basin body, at the same time, in a synthetic resin drainage basin 1 forming drain pipe sockets 16a and 16c in side walls 11 of the basin body, the basin body is molded of a material mixing polypropylene with calcium carbonate and, at the same time, when the basin body is molded, vinyl chloride collars 21 are monolithically fitted to the drain pipe sockets 16a and 16c. Closing plates 20 for closing the drain pipe sockets 16a and 16c are connected to the side walls 11 and, at the same time, thin gutters 19 capable of cutting the closing plates 20 are formed on the circumferential sections of the closing plates 20 extending over the overall circumference.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage basin which is connected to a manhole pipe and a drainage pipe and is buried in the ground.

[0002]

2. Description of the Related Art Conventionally, this type of drainage basin has been molded from vinyl chloride. This is because most drainage pipes currently used are made of vinyl chloride, and if the drainage pipe is also made of vinyl chloride, the adhesive used to bond the drainage pipes together (hereinafter referred to as "adhesive for vinyl chloride") This is because it is convenient because the drainage basin and the drainage pipe can be bonded.

[0003]

However, the conventional vinyl chloride drainage basin has the following problems. That is, since vinyl chloride is expensive, there is a problem that the manufacturing cost of the drainage basin becomes high. Further, since it is difficult to cut vinyl chloride with a knife or the like, it is not possible to arbitrarily open a hole in a drainage basin at a drainage pipe laying construction site. Therefore, it is necessary to open the drainage pipe inlet in advance in the drainage basin, and depending on the difference in the number of drainage pipes connected and the connection direction of the drainage pipes to be connected, Since it was necessary to prepare several types of drainage basins with different numbers and directions, the mold cost of the drainage basin was increased, and for this reason also the manufacturing cost of the drainage basin was high.

By the way, it is possible to mold the drainage basin with a resin of low price other than vinyl chloride. In this case, however, since the adhesive for vinyl chloride cannot bond the drainage basin and the drainage pipe, another adhesive is used. It becomes necessary to bring two kinds of adhesives to the construction site and use them properly.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a drainage basin which can be manufactured at low cost and which does not inconvenience the connection of drainage pipes. It is what

[0006]

In order to achieve the above object, the present invention is made of a synthetic resin in which a manhole pipe receiving port is formed on the upper surface of a container body and a drain pipe receiving port is formed on a side wall of the container body. In the drainage basin, the basin body is molded from a material that is a mixture of polypropylene and calcium carbonate, and is equipped with a vinyl chloride collar that is fitted into the drainage pipe opening when molding the basin body. It is a thing.

In addition to the above construction, a closing plate for closing the drainage pipe receiving port is connected to the side wall of the basin body, and a thin groove for cutting the closing plate is formed on the entire periphery of the closing plate. It is formed over the circumference.

Calcium carbonate is added in order to adjust the strength and processing difficulty of the molded drainage basin, and the mixing ratio is not particularly limited, but the polypropylene: calcium carbonate weight ratio is 35. : 65-45:
The ratio is preferably 55, more preferably 40:60. Incidentally, if the blending ratio of calcium carbonate is higher than the above ratio, the strength of the drainage basin is lowered, and if the blending ratio of polypropylene is higher, it tends to be difficult to perform processing such as punching after molding.

[0009]

According to the drainage basin of the present invention, when connecting a drainage pipe, an adhesive for vinyl chloride is applied to the end of the drainage pipe and inserted into the drainage pipe receptacle, so that the drainage pipe and the collar And are firmly adhered, and the drainage pipe and the drainage basin are securely connected.

Further, in the case where the closing plate for closing the drainage pipe receiving port is connected to the side wall of the basin body, depending on the number of drainage pipes to be connected and the difference in connection direction between the drainage pipes to be connected,
Only the drain pipe receptacle to be used can be opened by cutting the blocking plate along the thin groove.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a drainage basin 1 according to an embodiment of the present invention. The drainage basin 1 is molded from a material obtained by mixing polypropylene and calcium carbonate, and the basin body has a substantially cylindrical side wall 11 with a slight taper that reduces its diameter downward. A manhole tube having a bottom wall 12 connected to a side wall 11 and formed in a bottomed tube shape, and a top surface thereof having a connection tube 13 and a stopper surface 14 having a diameter corresponding to a manhole tube having a nominal diameter of 150 mm. Receptacle 15
Are formed.

Further, the side wall 11 is formed with drainage pipe receiving ports 16a, 16b, 16c whose directions differ by 90 °. Each drain pipe receiving port 16a, 16b, 16c is similarly configured. That is, a connecting cylinder 17 having a diameter corresponding to a drain pipe having a nominal diameter of 100 mm is provided on the side wall 11 so as to project. A stopper surface 18 is provided on the inner peripheral side of the connection cylinder 17.
The stopper surface 18 is a flat surface that can be brought into close contact with the end surface of the drain pipe, and is formed in an annular shape having a width that substantially matches the thickness of the peripheral wall of the drain pipe. An annular thin groove 19 is formed on the inner peripheral side of the stopper surface 18, and the inner peripheral side of the thin groove 19 is a closing plate 20 linked to the side wall 11. Further, a collar 21 is provided on the inner surface of each connecting cylinder 17. The collar 21 is made of vinyl chloride and is fitted and integrated at the time of molding the container body.

A thin groove 22 is formed along the entire periphery of the bottom wall 12 of the basin body. The outer diameter of the lower end edge of the side wall 11 is formed to be slightly smaller than the inner diameter of the connecting cylinder 13 of the manhole pipe receiving port 15.
1 lower end edge and another drainage basin 1 manhole pipe socket 15
And can be fitted relative to each other.

With the above construction, when connecting the drain pipe B made of vinyl chloride having a nominal diameter of 100 mm to the drain pipe receiving port 16a as shown in FIG. The side wall 11 is cut along 19 and the blocking plate 20 is removed. Side wall 1 because it is molded from a material that is a mixture of polypropylene and calcium carbonate
Cutting 1 is easy. Then, the end of the drainage pipe B coated with the vinyl chloride adhesive is inserted into the connection cylinder 17.
As a result, the drain pipe B and the collar 21 are firmly adhered, and the drain pipe B and the drain basin 1 are reliably connected. At this time, since the width of the stopper surface 18 that abuts against the end surface of the drainage pipe B is substantially equal to the thickness of the peripheral wall of the drainage pipe B, no step is formed at the connecting portion.

In the drainage basin 1 of this embodiment, depending on the number of drainage pipes to be connected and the difference in connection direction between the drainage pipes to be connected, the drainage pipe to be used among the drainage pipe receiving ports 16a, 16b, 16c. Only the pipe socket can be opened. Therefore, when connecting two drainage pipes whose directions are different by 90 °, when connecting two drainage pipes whose directions are different by 180 °, and when connecting three drainage pipes whose directions are different by 90 °, It can be used for either.

Next, an example of the usage of the drainage basin constructed as described above will be described with reference to FIG. In this example, the drainage basins 1 are vertically connected. That is, the bottom wall 12 is cut off by cutting the upper drainage basin 1a along the thin groove 22, and the side wall 11 of the drainage basin 1a is cut off.
Manhole pipe receiving port 15 of drainage basin 1b with the lower end edge of the lower side
Is fitted into.

The drain pipe B made of vinyl chloride is connected to the drain pipe receiving ports 16a and 16c of the drainage rod 1a and the drain pipe receiving port 16a of the drainage rod 1b as described above. Further, a lower end of a vinyl chloride manhole pipe D having a nominal diameter of 150 mm whose upper end is covered with a manhole cover C is inserted and connected to the connecting cylinder 13 of the manhole pipe receiving port 15 of the drainage basin 1a. The manhole pipe D has a length corresponding to the burial depth of the drainage basin. Since only a vertical force is applied to the connecting portion between the drainage basin 1a and the drainage basin 1b and the connecting portion between the drainage basin 1a and the manhole pipe D, commercially available silicon-based materials are applied to these portions. It is enough to apply caulking material.

In this usage mode, the drainage basin 1a and the drainage basin 1
Since b and b are rotatable relative to each other, the direction of the drain pipe B connected to the drainage basin 1a and the drainage pipe B connected to the drainage basin 1b
The difference from the direction of can be set arbitrarily. Needless to say, the drainage basin 1 of this embodiment can be used alone without connecting a plurality of drainage basins up and down as shown in FIG.

Further, in the present invention, the bottom wall of the drainage basin does not necessarily have to be cut off. Further, the shape of the details of the drainage basin, the diameter of the manhole pipe receiving port, the number and the diameter of the drainage pipe receiving port, the presence or absence of the closing plate, etc. are not limited to those in the above-mentioned embodiment, and are arbitrary.

[0020]

As described above, in the drainage basin according to the present invention, the basin body is formed of a material which is a relatively inexpensive mixture of polypropylene and calcium carbonate.
It can be manufactured at a lower cost than a drainage basin molded with vinyl chloride, and it is extremely convenient because the drainage basin and drainage pipe can be connected by an adhesive for vinyl chloride that connects the drainage pipes. .

Further, in the case where a closing plate for closing the drain pipe receiving port is connected to the side wall of the basin body, the drain pipe receiving member to be used is cut by cutting the closing plate along the thin groove with a knife or the like. Since only the mouth can be opened, one kind of drainage pipe can cope with some cases in which the number of drainage pipes connected and the directions of the drainage pipes connected to each other are different. Therefore, since the types of drainage basins can be reduced, it is possible to further reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a front view of a drainage basin according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the drainage basin of FIG.

FIG. 3 is a sectional view taken along line AA of the drainage basin of FIG.

FIG. 4 is an enlarged sectional view of an essential part showing a method of connecting a drainage pipe.

5 is an explanatory view of a usage state of the drainage basin of FIG. 1. FIG.

[Explanation of symbols]

 1 Drain basin 11 Side wall 12 Bottom wall 15 Manhole pipe receiving port 16a, 16b, 16c Drain pipe receiving port 19 Thin groove 20 Closure plate 21 Color B Drain pipe D Manhole pipe

Claims (2)

[Claims] 1. A synthetic resin drainage basin in which a manhole pipe receptacle is formed on an upper surface of the basin body and a drainage pipe receptacle is formed on a side wall of the basin body, wherein the basin body contains polypropylene and calcium carbonate. A drainage basin characterized by being made of a mixed material and having a vinyl chloride collar which is fitted into and integrated with a drainage pipe receiving port when the basin body is molded. 2. A closing plate for closing the drainage pipe receiving port is connected to a side wall of the basin body, and a thin groove for cutting the closing plate is formed all around the circumference of the closing plate. The drainage basin according to item 1.