JP2001227020A - Drain system for house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain system for a house without causing deterioration in strength of an outer peripheral foundation of a building, facilitating maintenance such as an inspection and cleaning in a drain pipeline, capable of reducing a civil engineering work cost such as excavating work, effectively utilizing a building lot even in a small building lot and having an excellent drainability characteristic. SOLUTION: In this drain system for the house, a drain main pipe 3 is laid along the inside of the outer peripheral foundation 4 of the building under the floor of the building 2, an outflow side end part of a drain branch pipe 51 connected to various drain equipment 21 to 25 arranged in the building is connected in a prescribed position of the drain main pipe 3, a downstream side end part of the drain main pipe 3 is connected to an inflow side socket 61 of a drainage basin 6 buried in the outside ground of the outer peripheral foundation 4 via a 90-degree large bending Y joint 34, the drain main pipe 3 is inserted into respective inserting holes 41a arranged in plural inside foundations 41 existing inside the outer peripheral foundation 4, and is laid by having a prescribed drainage gradient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a residential drainage system.

[0002]

2. Description of the Related Art Conventionally, in a small apartment house or a private house such as an apartment, a kitchen 25, a toilet 21, a washroom 22, and a washing machine 2 installed in a building 2 as shown in FIG.
3, drainage generated in various drainage facilities such as bathroom 24,
It flows into each drainage basin 6 buried outside the building through each drainage branch pipe 51 connected to each drainage facility,
The drainage system is a drainage system that flows into the public basin 7 through the drainage pipe 3 in the residential land that connects the drainage basins 6, and is drained to the sewage main line buried under the public road via the public basin 7.

In the case of the above-mentioned conventional drainage system, the drainage pipe 3 in the residential land 1 is buried outside the foundation 3 of the building 2, and various types of drainage pipes 3 are provided at the bent part and the junction part of the drainage pipe 3. Drain basins will be installed.
As the drainage basin, for example, one made of polypropylene resin or one made of hard vinyl chloride resin is used.
The rising diameter of these drainage basins is generally about 300 mm for polypropylene resin, and about 150 to 200 mm for hard vinyl chloride resin.

[0004] As described above, in the conventional drainage system, a drainage pipe is buried between the outer edge of the building and the boundary of the residential land along the outer edge of the building. A space is required for installing a drainage basin to which the end of each drainage branch pipe connected to the drainage facility is connected. For this reason, there was a problem that it became difficult to install a drainage basin due to the narrowing of the residential land.

As a drainage system for a house which solves such a problem, Japanese Unexamined Patent Publication No. 10-331221 discloses a drainage branch pipe which is piped under the floor of a building and connected to each drainage facility in the building. And a drain pipe connected to a drainage pipe having an inlet branch pipe port connecting the drain branch pipe to the outside along the outer periphery of the building, wherein the drain branch pipe is directed substantially in the same direction. Connected to the inflow branch of a drainage basin connected to the drainage pipe that is led out of the building and piped into the residential land, and the drainage branch pipe is a vertical branch pipe that is piped under the floor of the building. And a curved branch pipe section connecting the horizontal branch pipe section and the horizontal branch pipe section, which are piped with a gradient with the downstream side facing downward below the floor,
A drainage piping device for a house in which at least each curved branch pipe portion of each drainage pipe is formed by a flexible pipe is disclosed.

[0006]

However, in the case of the drainage piping device disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 10-331221, each of the horizontal branch pipe portions forming the drainage branch pipes connected to each drainage facility. Must be penetrated through the foundation of the building and connected to the inlet of the drainage basin. For this reason, there has been a problem that the strength of the outer peripheral foundation of the building is locally reduced, or that it takes time to perform watertight treatment of the penetrating portion. In addition, there is a problem that the connection work between the end of each horizontal branch pipe portion and the inflow branch pipe mouth of the drainage basin also requires man-hours.

[0007] An object of the present invention is to provide only one insertion hole in the outer peripheral foundation of a building, and as a result, the strength of the outer peripheral foundation of the building does not decrease, and maintenance and management such as inspection and cleaning of the drainage pipe are performed. It is an object of the present invention to provide a residential drainage system capable of easily performing the above-mentioned work and significantly reducing the cost of earthworks such as excavation work.

[0008] Another object of the present invention is to provide a drainage system for a house that can effectively utilize a residential land even in a small residential land.

It is a further object of the present invention to provide a residential drainage system having good drainage characteristics.

[0010]

According to the first aspect of the present invention, a drain main pipe is piped under the floor of a building along the inside of an outer peripheral foundation of a building, and a predetermined position of the drain main pipe is set inside the building. The outflow side end of a drainage branch pipe connected to various drainage facilities installed in is connected to the inflow side of a drainage basin in which the downstream end of the main drainage pipe is buried in the outer ground of the outer foundation of the building. A residential drainage system connected to the connection,
The drain main pipe is inserted through each of the through holes provided in a plurality of inner foundations existing inside the outer peripheral foundation and is piped with a predetermined drain gradient.

According to a second aspect of the present invention, there is provided under a floor of a building,
A drainage collecting member having a plurality of inflow side connection portions and one outflow side connection portion is arranged, and each inflow side connection portion of the drainage collection member is connected to various drainage facilities installed in the building. A drainage basin in which the outflow side end of the drainage branch pipe is connected and the downstream end of the drainage main pipe connected to the outflow side connection part of the drainage collecting member is buried in the ground outside the outer foundation of the building The drainage system for a house connected to the inflow side connection of the drainage basin, and the downstream end of the main drainage pipe connected to the outflow side connection of the drainage basin is connected to the inflow side connection of the public basin, The drainage collective member and the drainage main pipe are piped with a predetermined drainage gradient to the lower surface of the floor of the building.

According to a third aspect of the present invention, in the residential drainage system according to the second aspect, the drainage collecting member is a catchment basin having a plurality of inflow side connection portions and one outflow side connection portion. It is.

According to a fourth aspect of the present invention, in the residential drainage system according to the second aspect, the drainage collecting member is a header having a plurality of inflow side connection portions and one outflow side connection portion. .

(Operation) In the residential drainage system according to the first aspect of the present invention, the drainage main pipe is piped under the floor of the building along the inside of the outer peripheral foundation of the building, and at a predetermined position of the drainage main pipe, the building is drained. The drainage branch end of the drainage branch pipe connected to various drainage facilities installed inside is connected, and the downstream end of the drainage main pipe is buried in the outer ground of the outer foundation of the building. Since it is connected to the inflow side connection portion, only one insertion hole is formed in the outer peripheral foundation of the building, and the strength of the outer peripheral foundation of the building does not decrease.

[0015] Further, since the drainage main pipe is laid under the floor of the building along the inside of the peripheral foundation of the building, earthwork costs such as excavation work can be reduced. And since the drainage main pipe is exposed, partial repair of the drainage main pipe can be easily performed using, for example, an exchange joint. In addition, since only one drainage basin is to be buried in the residential land outside the outer foundation of the building, material costs and construction costs can be reduced. Furthermore, unlike the conventional case, there is no need to bury a drainage main pipe or a large number of drainage basins in the residential land outside the outer foundation of the building, so that the residential land can be effectively used even in a small residential land.

Further, since the drain main pipe is inserted through each of the through holes provided in the plurality of inner foundations and is provided with a predetermined drain gradient, the drain flow characteristics are good.

According to a second aspect of the present invention, a drainage collecting member having a plurality of inflow-side connection portions and one outflow-side connection portion is disposed under a floor of a building.
At each inflow side connection of the drainage collecting member, the outflow side end of the drainage branch pipe connected to various drainage facilities installed in the building is connected, and at the outflow side connection of the drainage collection member. The downstream end of the connected drain main pipe is connected to the inflow-side connection of a drainage basin buried in the ground outside the outer foundation of the building, and the drainage connected to the outflow-side connection of this drainage basin Since the downstream end of the main pipe is connected to the inflow side connection of the public basin, the outflow side end of the drainage branch pipe connected to various drainage facilities in the building is connected to each inflow side connection of the drainage collecting member. By connecting to the section, pipe connection with various drainage facilities can be efficiently performed at one place.

Further, by determining the installation location of the water collecting basin or the header which is the drainage collecting member, the piping route becomes clear, and the prefabricated piping becomes possible. as a result,
The construction difference between the plumbers can also be eliminated.

Since the drainage collecting member (water collecting basin or header) and the main drainage pipe are provided with a predetermined drainage gradient with respect to the lower surface of the building, the drainage flow characteristics are good.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic explanatory view showing a first embodiment of a residential drainage system of the present invention, FIG. 2 is a cross-sectional view showing a main part of FIG. 1, FIG. 3 is an enlarged view of a main part of FIG. 2, and FIG. 3 is a sectional view taken along line XX, and FIG. 5 is a longitudinal sectional view showing a main part of FIG.

In FIG. 1, reference numeral 2 denotes a building built in a residential land 1. Under the floor of the building 2, a drainage main pipe 3 made of a hard vinyl chloride resin is piped substantially in an L shape along the inside of the outer peripheral foundation 4 on the long side and the short side of the building 2. As shown in FIG. 2, the drain main pipe 3 is inserted into each of the insertion holes 41 a provided in the four inner foundations 41 and is piped. Specifically, for example, when the drainage gradient of the drainage main pipe 3 is 1/100, as shown in FIG. 5, the center of the insertion hole 41a through which the downstream drainage main pipe 3 is inserted is located on the upstream side. It is shifted downward from the center of the insertion hole 41a through which the main drain pipe 3 is inserted by an amount corresponding to the drain gradient of the main drain pipe 3. In this manner, the drain main pipe 3 is provided with a predetermined drain gradient along the inside of the outer peripheral foundation 4.

[0022] The toilet 21 installed in the building 2 is connected to the branch inlet port 311 of the 90-degree large bend Y-joint 31 which is adhesively connected to a predetermined position of the drain main pipe 3.
The outflow-side end of each drainage branch pipe 51 connected to drainage facilities such as the washroom 22, the washing machine 23, the bathroom 24, and the kitchen 25 is adhesively connected.

In the vicinity of the bent portion of the drain main pipe 3, as shown in FIGS. 3 and 4, 2 fixed to the inner surface of the outer peripheral foundation 4.
It is supported by individual metal receiving plates 42 and is fixed by U-shaped fastening bolts 43. In this case, the drain main pipe 3 is basically provided with each hole 4 of the inner foundation 41.
Since the supporting plate 1a is supported, the receiving plate 42 is merely an auxiliary member, and may be installed as needed. In FIG. 4, reference numeral 44 denotes a floor panel surface material, 45 denotes a joist, and 46 denotes a floor joist.
Is moisture-proof concrete or embankment.

One end of a 90 ° elbow joint 32 is connected to the downstream end of the drain main pipe 3, and one end of a short pipe 33 adhesively connected to the other end of the elbow joint 32 is connected to the outer peripheral foundation 4 of the building 2.
Through the hole 4a. Then, as shown in FIG. 5, the other end of the short pipe 33 and the inflow-side receiving port 61 of the drainage tub 6 buried in the ground outside the outer peripheral foundation 4 of the building 2.
Between 90 ° large bend Y joint 34, short pipes 35 and 9
It is connected via a 0-degree elbow joint 36. A plug 342 is removably mounted in the upper end receptacle 341 of the 90-degree large bend Y joint 34.

As shown in FIG. 6, the 90-degree large bend Y joint 34 exposed on the ground surface is covered and protected by a pipe cover 34a. One end of a drain pipe 3A is adhesively connected to the outflow-side receiving port 62 of the drainage basin 6, and the other end of the drainage pipe 3A is adhesively connected to the inflow-side connection part of the public basin 7. The lower end of a short pipe 64 is connected to the upper end receiving port 63 of the drainage basin 6, and a cleaning port lid 65 is detachably attached to the upper end of the short pipe 64.

On the other hand, as shown in FIG. 2, one end of a 90-degree elbow joint 37 is adhesively connected to the upstream end of the drain main pipe 3, and a plug 371 is detachably inserted into the other end opening of the elbow joint 37. It is used as a cleaning port by being attached to. The elbow joint 37 is connected to the pipe so that the open end faces the inner surface of the outer peripheral foundation 4 of the building 2, and the outer peripheral foundation 4 corresponding to the open end is provided with a hole 4b penetrating inward and outward. By removing the plug 371 attached to the other end opening of the elbow joint 37 from the outside of the building 2 through the hole 4b,
The inside of the drain main pipe 3 piped along the outer peripheral foundation 4 on one long side can be cleaned.

A 90-degree large bend Y-joint 38 is adhesively connected to the bent portion of the drain main pipe 3. Have been. The shape of the plug 382 is such that a smooth flow path is formed in the Y joint 38. The outer peripheral foundation 4 facing the cleaning port of the Y joint 38
As shown in FIG. 2 and FIG. 3, a hole 4c penetrating inward and outward is provided. The size of the hole 4c is larger than that of the plug 382, and
By removing the plug 382 attached in the receiving port 381 of the Y joint 38 through c, the inside of the drain main pipe 3 piped along the outer peripheral foundation 4 on the short side can be cleaned.

As shown in FIGS. 2 and 3, a hole 4d penetrating inward and outward is also provided in the outer peripheral base 4 on the short side facing the receiving port on the branch inflow side of the Y joint 38, as shown in FIGS. I have. The size of the hole 4d is substantially the same as the size of the hole 4c. The drainage main pipe 3 can be updated using the holes 4c and 4d.

In the embodiment shown in FIG. 2, an opaque gray hard vinyl chloride resin pipe is used as the drain main pipe 3. For example, a transparent hard vinyl chloride resin pipe may be used. By making the drain main pipe 3 transparent, it is possible to visually inspect the inside of the drain pipe from the outside, and the inspection work of the drain pipe can be easily performed with good workability. The cross-sectional shape of the drain main pipe 3 is not limited to a circle, but may be an oval.

At this time, each of the drain branch pipes 51 connected to drain facilities such as the toilet 21, the washroom 22, the washing machine 23, the bathroom 24, and the kitchen 25 may be made of a transparent hard vinyl chloride resin pipe. The drain branch pipe 51 may be a flexible pipe such as a bellows pipe or a spiral pipe having a smooth inner surface. The drain main pipe 3 and each drain branch pipe 51 are made opaque.
The 90-degree large bend Y joint 31 connected to each drain branch pipe 51 and the 90-degree large bend Y joint 38 at the bent portion may be made of a transparent hard vinyl chloride resin.

In the above embodiment, the drainage pipes, such as the main drainage pipe, the 90-degree bent Y-joint, and the drainage branch pipe, are made of hard vinyl chloride resin, but may be made of polyethylene resin. At this time, a rubber ring method, a fusion method, a welding method, or the like may be adopted as the connection method.

Further, in the embodiment of FIG. 2, the 90-degree large bend Y joint 34 having a cleaning port is connected to the outer peripheral foundation 4 of the building 2.
The pipes were exposed to the outside and connected to the pipes. However, as shown in FIG.
Is formed in a part of the outer peripheral foundation 4 of the building 2 by using the concave part 461 to make a 90-degree large bend Y joint 34.
May be connected to the inside of the pipe. 7, the same members as those in FIG. 6 are denoted by the same reference numerals.

Further, in the embodiment shown in FIG. 2, one end of the 90-degree elbow joint 37 having a cleaning port is connected to the receiving port of the 90-degree large-bend Y joint 31 existing at the upstream end of the drain main pipe 3. At the same time, by providing a hole 4b in the outer peripheral foundation 4, the inside of the drain main pipe 3 piped along the outer peripheral foundation 4 on one long side can be cleaned through the hole 4b, but this 90-degree elbow joint 37 is connected. 90-degree large bend Y-joint 31 connected to the upstream end of drain main pipe 3
A plug may be removably mounted in the receiving port of the printer to form a cleaning port. At this time, the shape of the plug is a 90-degree large bend Y joint 31.
It is desirable to form a smooth flow path in the inside.

By doing so, the hole 4 is formed in the outer peripheral foundation 4.
An operator can enter under the floor or inspect and clean the inside of the drain main pipe 3 using the opening provided on the floor without providing the b.

In the first embodiment, the drain main pipe 3 and each 90
The connection method with the large-degree bent Y-joint 31 employs the bonding method. May be connected by a rubber ring system. As described above, by providing the rubber ring connecting portion in a part of the drain main pipe 3 that is piped along the outer peripheral foundation 4 on the long side and the short side, the expansion and contraction of the drain main pipe 3 caused by the temperature difference is absorbed. can do. In addition, separately from the 90-degree bent Y-joint 31, a pipe joint provided with a rubber ring receiving port in the middle of the drain main pipe 3 may be connected by piping.

FIG. 8 shows a second embodiment of the residential drainage system of the present invention.
FIG. 9 is a plan view and a front view showing a water collecting basin in FIG. 8 showing a main part of the embodiment.

In FIG. 8, the outer peripheral foundation 4 under the floor of the building 2 is shown.
The catchment basin 8 is arranged on the moisture-proof concrete or the embankment 46 inside the inside. This catchment basin 8 is made of a hard vinyl chloride resin, and as shown in FIGS. 9 (a) and 9 (b),
Five inlet-side receiving ports 82 and one outlet-side receiving port 83 are integrally formed on the wall of the bottomed cylindrical main body 81, and a lid 84 is detachably attached to the upper end opening of the main body 81. Have been. Receiving ports 82 on the inflow side and the outflow side of the catchment basin 8,
The diameter of 83 is 30 to 75 mm and 100 mm, respectively.

Each drain 82 connected to a drainage facility such as a toilet 21, a washroom 22, a washing machine 23, a bathroom 24, and a kitchen 25 installed in the building 2 is provided at each receiving port 82 of the water collecting basin 8. The outflow side end of 51 is adhesively connected. In addition,
As shown in FIG. 8, the drain branch pipe 51 connected to the toilet 21 passes through a hole 41 a provided in the inner foundation 41 and is piped. In addition, a part of each drain branch pipe 51 is formed in a bellows shape or a spiral shape, and is provided with flexibility so that a bent pipe can be formed.

Between the catchment basin 8 and the kitchen 25, a drainage branch pipe 5
1 is connected and connected in an L-shape. A 90-degree large-bend Y joint 52 is adhesively connected to the bent portion of the drain branch pipe 51, and a plug 53 is detachably installed in a receiving port of the Y joint 52. It is attached to and is a cleaning opening. The shape of the plug 53 is such that a smooth flow path is formed in the Y joint 52.

Similarly, a 90 ° large bend Y-joint 52 is adhesively connected to the bend of the drain branch pipe 51 connecting between the catchment basin 8 and the bathroom 24. The same plug 53 as described above is detachably attached to form a cleaning port.

As described above, by providing a cleaning port at the bent portion of both the drain branch pipes 51 connecting the bathroom 24 and the kitchen 25 with the catchment basin 8, the drain drain pipes 51 are provided through the cleaning ports. The inside can be inspected and cleaned.

The upstream end of the drain main pipe 3 is adhesively connected to the outlet port 82 of the catchment basin 8.
Of the drainage basin 6 embedded in the ground outside the outer foundation 4 of the building 2 is adhesively connected. At this time, as shown in FIG. 10 and FIG. 11, the drain main pipe 3 is supported by the concave portions 91 of the pipe pillows 9 arranged at two places on the upstream side and the downstream side of the drain main pipe 3, and the moisture-proof concrete 46 under the floor is provided. It is plumbed above with a drainage gradient of, for example, 1/100. In this case, the bottom height (H) of the pipe pillow 9 arranged downstream of the drain main pipe 3 is lower than that of the pipe pillow 9 arranged upstream of the drain main pipe 3. The tube pillow 9 is made of wood, synthetic resin, concrete or the like into a predetermined shape.

The bathroom 24, the kitchen 25 and the catch basin 8
A similar pillow 9 having a small dimension is also arranged at the portion of the two drainage branch pipes 51 connecting between the drainage branch pipes 51, and the two drainage branch pipes 51 have a predetermined drainage gradient. Have been.

A drain main pipe 3A is adhesively connected to the outlet port 62 of the drainage basin 6, and the downstream end of the drainage main pipe 3A is adhesively connected to the inlet side inlet of the public pit 7. Drainage generated in each of the drainage facilities 21 to 25 in 2 is drained to a sewer main pipe.
The drain main pipes 3 and 3A are both made of opaque hard vinyl chloride resin having a diameter of 100 mm and colored gray.

The downstream end of the drain main pipe 3 projecting outside through the hole 4a of the outer peripheral foundation 4 and the building 2
As shown in FIG. 6 of the first embodiment, the space between the drainage basin 6 and the inflow side receiving port 61 buried in the outer ground of the outer peripheral foundation 4
It is adhesively connected via a 90-degree large bend Y joint 34, a short pipe 35, and a 90-degree elbow joint 36.

In the embodiment shown in FIG. 10, the pipe pillow 9 is used to impart a predetermined drain gradient to the drain main pipe 3, but instead of this pipe pillow 9, a pipe with a gradient made of hard vinyl chloride resin is used. The joint 9A may be used. As shown in FIG. 12, the pipe joint 9A is provided with, for example, a 1/100 inclined surface on the lower surface of the plate-shaped support leg 91A. Similarly, bathroom 2
A similar pipe joint 9A is also arranged at the part of both drainage branch pipes 51 connecting between the kitchen 4 and the kitchen 25 and the catchment basin 8,
A predetermined drain gradient may be provided to both drain branch pipes 51. At that time, catch basin 8 and bathroom 24 (or kitchen 2
5) The 90-degree large bend Y-joint 52 itself connected to the bent portion of the drain branch pipe 51 connecting the Y-joint itself with a slope, or a bend joint with a slope instead of the Y-joint 52 It may be.

Further, as shown in FIG. 13, a sloped support plate 9B may be used in place of the tube pillow 9. This support plate 9
B is made of wood, synthetic resin, concrete, or the like into a predetermined shape as shown in FIG. 14, and is placed on the moisture-proof concrete 46 under the floor, and the upper surface 9 of the support plate 9B.
1B has, for example, a 1/100 inclined surface.

FIG. 15 is a cross sectional view showing a main part of a third embodiment of the residential drainage system according to the present invention.

In FIG. 15, a header 8 is disposed on moisture-proof concrete or embankment 46 inside the outer peripheral foundation 4 under the floor of the building 2. The header 8 includes a toilet 21, a washroom 22, and a washing machine 2 installed in the building 2.
3. It has a function of collecting and draining wastewater generated in drainage facilities such as the bathroom 24 and the kitchen 25 in one place.

The header 8 is made of a hard vinyl chloride resin, and has five 90-degree large bend Y-joints 8a adhesively connected to each other via short pipes in the pipe axis direction. At that time, the adjacent 90
The receiving ports 81a on the branch inflow side of the large bending Y joint 8a are connected so as to face in opposite directions. The diameter of the receiving port 81a on the branch inflow side is smaller than the diameter of the receiving ports 82a at both ends of the Y joint 8a. A lid 84 is detachably attached to the receptacle 82 a on the upstream side of the header 8. The diameters of the inlets 81a and 82a on the inflow side and the outflow side of the header 8 are 30 to 75 mm, respectively.
0 mm. The header 8 is an opaque gray color.

Each receiving port 81a on the branch inflow side of the header 8
In addition, the toilet 21 installed in the building 2, the washroom 2
2. The outflow-side end of each drainage branch pipe 51 connected to drainage facilities such as the washing machine 23, the bathroom 24, and the kitchen 25 is connected. The drain branch pipe 5 connected to the toilet 21
1 is piped through a hole 41 a provided in the inner foundation 41. A part of each drain branch pipe 51 has a bellows shape or a spiral shape, and is provided with flexibility so that a bent pipe can be formed.

An L-shaped drain branch pipe 51 is connected and connected between the header 8 and the kitchen 25, and a 90-degree large-bend Y joint 52 is adhesively connected to the bent portion of the drain branch pipe 51. A plug 53 is detachably mounted in the receptacle of the Y-joint 52 to serve as a cleaning port. The shape of the plug 53 is such that a smooth flow path is formed in the Y joint 52.

Similarly, the bent portion of the drain branch pipe 51 connecting between the header 8 and the bathroom 24 has a large 90 ° bend.
The joint 52 is adhesively connected, and the same plug 53 as described above is detachably mounted in the receptacle of the Y joint 52 to form a cleaning port.

As described above, by providing a cleaning port at the bent portion of both the drain branch pipes 51 connecting between the bathroom 24 and the kitchen 25 and the header 8, the inside of the drain branch pipes 51 is provided through the cleaning ports. Inspection and cleaning can be performed.

Then, the outlet port 82a of the header 8
The upstream end of the drain main pipe 3 is adhesively connected via a 90-degree bent joint. At this time, as shown in FIG. 12, the header 8 and the main drainage pipe 3 have a total of 4 places of two places on the header 8 and two places on the upstream and downstream sides of the main drainage pipe 3.
It is supported by the concave portion 91 of the pipe pillow 9 arranged at the location, and is piped on the moisture-proof concrete 46 under the floor with a drainage gradient of, for example, 1/100. This tube pillow 9 is
It is basically the same as that of the embodiment, and the bottom height (H) of the tube pillow 9 arranged on the downstream side is lower than that of the tube pillow 9 arranged on the upstream side. Have been.

The bathroom 24 and the kitchen 25 and the catchment basin 8
The pipe pillows 9 similar to those of the second embodiment are also arranged at the portions of the two drainage branch pipes 51 connecting between the two, and the two drainage branch pipes 51 have a predetermined drainage gradient. It is plumbed.

The downstream end of the drain main pipe 3 is connected to the building 2.
Of the drainage basin 6 buried in the outer ground of the outer peripheral foundation 4 is connected by bonding to the inflow side receiving port 61 of the drainage basin 6, and the drainage main pipe 3 </ b> A is adhesively connected to the outflow side receiving port 62 of the drainage basin 6 by
The downstream end of A is adhesively connected to the inflow-side receiving port of the public basin 7, and the drainage devices 21 to 21 in the building 2 are passed through the public basin 7.
The drainage generated at 25 is drained to the sewer main. The drain main pipes 3 and 3A are both 100 mm in diameter.
mm made of opaque hard vinyl chloride resin colored gray.

The downstream end of the drainage main pipe 3 penetrating the hole 4a of the outer peripheral foundation 4 and projecting outside, and the inflow-side receiving port 6 of the drainage basin 6 buried under the outer peripheral foundation 4 of the building 2 underground.
1, the 90-degree large bend Y joint 34, the short pipe 35, and the 90-degree elbow joint 36, as in FIG. 6 of the first embodiment.
Connected through.

Further, since the header 8 is made of a transparent synthetic resin, the inside of the header 8 can be visually inspected from the outside, and the inside of the header 8 can be cleaned through the cleaning port at the end of the header 8. Can be performed.

At this time, the drain branch pipes 51 connected to drain facilities such as the toilet 21, the washroom 22, the washing machine 23, the bathroom 24, and the kitchen 25 may also be made of a transparent hard vinyl chloride resin pipe. The drain main pipe 3 and each drain branch pipe 51 may be opaque, and the header 8 may be transparent. Each drainage branch pipe 51 may be a flexible pipe such as a bellows pipe or a spiral pipe having a smooth inner surface.

Further, in the embodiment shown in FIG. 15, the header 8 is formed by connecting a plurality of 90 ° large-bend Y-joints 8a in the pipe axis direction. However, as shown in FIG. 16, the header itself is integrated. May be done. At this time, the header may be made of synthetic resin or metal.

The header 8A shown in FIG. 16 has five inlet-side connecting portions 81a formed at predetermined intervals on the upper side wall portion of the cylindrical header main body 81, and one end opening of the header main body 81 is covered. The port is closed by the body 83 to provide a cleaning port, and the other end is used as the outlet port 82a on the outflow side.

Also in the case of the embodiment shown in FIG. 15, the pipe joint 9A with a slope shown in FIG.
A predetermined drainage gradient may be applied to the header 8 and the drainage main pipe 3 by using the support plate 9B with a gradient shown in FIG. Further, when the header 8A is integral as shown in FIG. 16, a support leg is provided on the header body 81,
A predetermined drain gradient may be provided by the support leg.

Similarly, a similar pipe joint 9A is also arranged at a portion of both drainage branch pipes 51 connecting the bathroom 24 and the kitchen 25 with the catchment basin 8, and is connected to both drainage branch pipes 51. A predetermined drain gradient may be provided. At that time, catchment basin 8
90-degree large bend Y connected to the bend of the drain branch 51 connecting the water and the bathroom 24 (or the kitchen 25)
The joint 52 itself has a slope or this Y
A bend joint with a slope may be used instead of the joint 52.

[0065]

According to the first aspect of the present invention, the drainage pipe for a house is provided under the floor of the building along the inside of the outer peripheral foundation of the building, and at a predetermined position of the drainage pipe,
The drainage branch end of the drainage branch pipe connected to various drainage facilities installed in the building is connected, and the downstream end of the drainage main pipe is a drainage basin buried in the outer ground of the outer foundation of the building. Since it is connected to the inflow side connection portion, only one insertion hole is formed in the outer peripheral foundation of the building, and the strength of the outer peripheral foundation of the building does not decrease.

Further, since the drain main pipe is provided under the floor of the building along the inside of the outer peripheral foundation of the building, the cost of earthwork such as excavation work can be reduced. In addition, since the piping route is clear, prefabricated piping becomes possible, and there is no difference in construction between piping workers. And since the drainage main pipe is exposed, partial repair of the drainage main pipe can be easily performed using, for example, an exchange joint.

Moreover, since only one drainage basin is buried in the residential land outside the outer foundation of the building, material costs and construction costs can be reduced. Furthermore, since it is not necessary to bury a drainage main pipe and a large number of drainage basins in the residential land outside the outer foundation of the building, the residential land can be effectively used even in a small residential land.

Further, since the drain main pipe is inserted with a predetermined drain gradient through each of the insertion holes provided in the plurality of inner foundations, the flow characteristics of the drain are good.

In the residential drainage system according to the second aspect of the present invention, a drainage collecting member having a plurality of inflow-side connection portions and one outflow-side connection portion is disposed under the floor of the building.
At each inflow side connection of the drainage collecting member, the outflow side end of the drainage branch pipe connected to various drainage facilities installed in the building is connected, and at the outflow side connection of the drainage collection member. The downstream end of the connected drain main pipe is connected to the inflow-side connection of a drainage basin buried in the ground outside the outer foundation of the building, and the drainage connected to the outflow-side connection of this drainage basin Since the downstream end of the main pipe is connected to the inflow side connection of the public basin, the outflow side end of the drainage branch pipe connected to various drainage facilities in the building is connected to each inflow side connection of the drainage collecting member. By connecting to the section, pipe connection with various drainage facilities can be efficiently performed at one place.

Further, by determining the installation location of the water collecting basin or the header, which is a drainage collecting member, the piping route becomes clear and the prefabricated piping becomes possible. as a result,
The construction difference between the plumbers can also be eliminated.

Further, since the drainage collecting member (water collecting basin or header) and the drainage main pipe are piped with a predetermined drainage gradient to the lower surface of the building, the drainage flow characteristics are good.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a first embodiment of the present invention.

FIG. 2 is a transverse sectional view showing a main part of FIG.

FIG. 3 is an enlarged explanatory view showing a bent portion of a drain main pipe of FIG. 1;

FIG. 4 is a sectional view taken along line XX of FIG. 3;

FIG. 5 is an enlarged vertical sectional view showing a supporting structure of a drain main pipe of FIG. 2;

FIG. 6 is an enlarged longitudinal sectional view showing a main part of FIG. 2;

FIG. 7 is a longitudinal sectional view showing a modification of FIG. 6;

FIG. 8 is a cross-sectional view showing a main part of a second embodiment of the present invention.

9A and 9B are a plan view and a front view showing the catch basin of FIG.

FIG. 10 is an enlarged vertical sectional view showing a supporting structure of a drain main pipe in FIG. 8;

FIG. 11 is an enlarged sectional view taken along line YY of FIG. 10;

FIG. 12 is an explanatory view of a main part showing a modification of FIG. 10;

FIG. 13 is a longitudinal sectional view showing another modification of FIG.

FIG. 14 is an explanatory perspective view showing the inclined plate of FIG. 13;

FIG. 15 is a cross sectional view showing a main part of a third embodiment of the present invention.

FIG. 16 is a front view showing a modified example of the header of FIG.

FIG. 17 is a schematic explanatory view showing a conventional residential drainage system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Residential land 2 Building 21 Toilet 22 Washroom 23 Washing machine 24 Bathroom 25 Kitchen 3 Drain main pipe 31, 34 90 degree large bend Y joint 4 Peripheral foundation 4a, 4b, 4c, 4d Hole 41 Inner foundation 41a Insertion hole 46 Moistureproof concrete 5 Drain Branch pipe 6 Drainage basin 61 Inlet side receiving port 8 Water collecting basin (header) 8a 90 degree large bend Y joint 82 Inlet side receiving port 83 Outflow side receiving port 8A Header 81a Inflow side receiving port 82a Outgoing side receiving port 9 Pipe pillow 9A Slope fitting 91A Support leg 9B Support plate with slope

Claims (4)

[Claims] A drain main pipe is provided under the floor of a building along the inside of an outer peripheral foundation of the building, and at a predetermined position of the drain main pipe, drainage is connected to various drainage facilities installed in the building. A residential drainage system in which a discharge end of a branch pipe is connected, and a downstream end of the drainage main pipe is connected to an inflow side connection of a drainage basin buried in the ground outside the outer foundation of the building. The residential main pipe, wherein the main drainage pipe is provided with a predetermined drainage gradient by being inserted through each of the insertion holes provided in a plurality of inner foundations existing inside the outer peripheral foundation. Drainage system. 2. A drainage collecting member having a plurality of inflow-side connection portions and one outflow-side connection portion is disposed under a floor of a building, and is installed in the building at each inflow-side connection portion of the drainage collection member. The outflow end of the drainage branch pipe connected to the various drainage facilities is connected, and the downstream end of the main drainage pipe connected to the outflow side connection of the drainage collecting member is connected to the outer peripheral foundation of the building. The downstream end of the main drainage pipe connected to the inflow side connection of the drainage basin buried in the outside ground is connected to the inflow side connection of the public basin connected to the outflow side connection of this drainage basin. A drainage system for a house, characterized in that the drainage collecting member and the drainage main pipe are piped with a predetermined drainage gradient to a lower surface of a building floor. 3. A drainage collecting member comprising: a plurality of inflow-side connecting portions;
3. The residential drainage system according to claim 2, wherein the drainage system is a catchment basin having a plurality of outflow-side connections. 4. The drainage collecting member is connected to a plurality of inflow-side connecting portions.
3. The residential drainage system according to claim 2, wherein the header is a header having a plurality of outflow-side connections.